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Dayang Chem (Hangzhou) Co.,Ltd.

DayangChem exported this product to many countries and regions at best price. If you are looking for the material's manufacturer or supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product spe

(2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid

Cas:80082-65-1

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Simagchem Corporation

Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

High quality (2S-Trans)-3-Amino-2-Methyl-4-Oxoazetidine-1-Sulphonic Acid supplier in China

Cas:80082-65-1

Min.Order:0 Metric Ton

Negotiable

Type:Manufacturers

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Wuhan Fortuna Chemical Co.,Ltd

High quality (2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid CAS 80082-65-1 with factory price Company profile Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutic

High quality (2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid CAS 80082-65-1 with factory price

Cas:80082-65-1

Min.Order:10 Kilogram

FOB Price: $10.0

Type:Trading Company

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Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Chemwill Asia Co., Ltd.

Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

3-Amino-4-methylmonobactamic acid

Cas:80082-65-1

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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Hebei yanxi chemical co.,LTD.

chengdu and import and export trade co., LTD., who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do res

(2S)-trans-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid

Cas:80082-65-1

Min.Order:1000 Gram

FOB Price: $500.0

Type:Trading Company

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Hebei Nengqian Chemical Import and Export Co., LTD

With our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturin

(2R,3S)-3-Amino-2-methyl-4-oxo-1-azetidinesulfonic Acid

Cas:80082-65-1

Min.Order:1 Kilogram

FOB Price: $100.0 / 150.0

Type:Trading Company

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Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

Pharmaceutical Grade CAS 80082-65-1 with competitive price

Cas:80082-65-1

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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LIDE PHARMACEUTICALS LIMITED

Advantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the R&amp

Henan Sinotech Import&Export Corporation

Name: (2R,3S)-3-Amino-2-methyl-4-oxo-1-azetidinesulfonic Acid Synonyms: (2S-trans)-3-Amino-2-Methyl-4-oxo-Azetidinesulfomic acid CAS:80082-65-1 MF: C4H8N2O4S Appearance: white powder Storage:Store in cool and dry place, away from sun light.

(2R,3S)-3-Amino-2-methyl-4-oxo-1-azetidinesulfonic Acid CAS:80082-65-1

Cas:80082-65-1

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

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Hubei Langyou International Trading Co., Ltd

Advantages: Hubei XinRunde Chemical Co., Ltd is a renowned pharmaceutical manufacturer. We can offer high quality products at competitive price in quick delivery with 100% custom pass guaranteed. Never stop striving to offer our best service is

Aztreonam CAS NO 80082-65-1

Cas:80082-65-1

Min.Order:1 Kilogram

Negotiable

Type:Other

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Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

(2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid 80082-65-1

Cas:80082-65-1

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Henan Wentao Chemical Product Co., Ltd.

Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

(2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid

Cas:80082-65-1

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Hebei Quanhe Biotechnology Co. LTD

1. Timely and efficient service to ensure communication with customers 2. Produce products of different specifications and sizes according to your requirements. 3. Quality procedures and standards recognized by SGS. Advanced plant equipment ensures s

(2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid

Cas:80082-65-1

Min.Order:1 Kilogram

FOB Price: $260.0 / 300.0

Type:Lab/Research institutions

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Xiamen Hisunny Chemical Co.,Ltd

Best quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia

(2S-Trans)-3-Amino-2-Methyl-4-Oxoazetidine-1-Sulphonic Acid

Cas:80082-65-1

Min.Order:0

Negotiable

Type:Manufacturers

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Triumph International Development Limilted

Appearance:White or off-white Solid Storage:Store in a cool,dry place and keep away from direct strong light Package:As customer request Application:Used for research and industrial manufacture. Transportation:Common products:Se

(2R,3S)-3-Amino-2-methyl-4-oxo-1-azetidinesulfonic Acid

Cas:80082-65-1

Min.Order:100 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Keyingchem Co.,Ltd

Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det

(2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid

Cas:80082-65-1

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Afine Chemicals Limited

Company Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments

(2R,3S)-3-AMINO-2-METHYL-4-OXO-1-AZETIDINESULFONIC ACID

Cas:80082-65-1

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou J&H Chemical Co., Ltd.

J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia

The intermediate of Aztreonam (2s-trans)-3-Amino-2-Methyl-4-Oxo-1-Azetidinesulfonic acid

Cas:80082-65-1

Min.Order:0

Negotiable

Type:Lab/Research institutions

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SHANGHAI T&W PHARMACEUTICAL CO., LTD.

A substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc

(2R,3S)-3-AMINO-2-METHYL-4-OXO-1-AZETIDINESULFONIC ACID

Cas:80082-65-1

Min.Order:4 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Shanghai Massive Chemical Technology Co., Ltd.

Massive Chemical is certified with ISO9001 and ISO14001 manufacturer for this product. We will offer all documents as requirement for the materials which includes, Certificate of Analysis, Material Safety Data Sheet, and Method of Analysis and

(2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid/High quality/Best price

Cas:80082-65-1

Min.Order:1 Gram

FOB Price: $1.0

Type:Lab/Research institutions

inquiry

HANGZHOU YUNUO CHEMICAL CO.,LTD

Superior quality, moderate price & quick delivery. Appearance:white powder Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:10g/bag,or as your request Application:Used as Pharmaceutical Intermediates Transp

(2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid

Cas:80082-65-1

Min.Order:1 Gram

Negotiable

Type:Trading Company

inquiry

Henan Tianfu Chemical Co., Ltd.

(2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid Basic information Product Name: (2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1

80082-65-1 C4H8N2O4S (2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid

Cas:80082-65-1

Min.Order:1 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Xiamen Jenny Chemical Technology Co., Ltd.

GMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,

(2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonicacid

Cas:80082-65-1

Min.Order:1 Milligram

Negotiable

Type:Trading Company

inquiry

Shanghai Minstar Chemical Co., Ltd

Product Name: (2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid Synonyms: (3S-TRANS)-3-AMINO-4-METHYL-2-OXO-1-AZETINESULFONIC ACID;(2S, 3S)-3-Amino-2-methyl-4-oxoazetidine-1-sulfonic acid;(2S)-3-aMino-2-Methyl-4-oxoazetidine-1-sulfoni

(2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid

Cas:80082-65-1

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

EAST CHEMSOURCES LIMITED

factory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B

(2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid

Cas:80082-65-1

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

inquiry

Hangzhou Huarong Pharm Co., Ltd.

Hangzhou Huarong Pharm Co., Ltd.established since 2006 , has been actively developing specialty products for Finished Dosages, APIs, Intermediates, and Fine chemicals markets in North America, Europe, Korea, Japan, Mid-East and all over the World. Hu

(2S,3S)-3-amino-2-methyl-4-oxoazetidine-1-sulfonic acid

Cas:80082-65-1

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Shandong Mopai Biotechnology Co., LTD

Shandong Mopai Biotechnology Co., LTD is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. W

(2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid

Cas:80082-65-1

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

KAISA GROUP INC

1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer

(2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid

Cas:80082-65-1

Min.Order:1 Metric Ton

FOB Price: $1.5

Type:Trading Company

inquiry

Hangzhou Zhongqi chem Co.,Ltd.

Located in Hangzhou National Hi-Tech Industrial Development Zone, zhongqichem is a technical company mainly focus on the Custom synthesis, manufacturing, sales of chemicals to various industries. Benefiting from the outstanding customer service and h

(2S-trans)-3-Amino-2-methyl-4-oxoazetidine-1-sulphonic acid

Cas:80082-65-1

Min.Order:0

Negotiable

Type:Other

inquiry

Synthetic route

(3S)-trans-3-<(tert-butoxycarbonyl)amino>-4-methyl-2-oxoazetidine-1-sulfonic acid tetra-n-butylammonium salt
80082-60-6

(3S)-trans-3-<(tert-butoxycarbonyl)amino>-4-methyl-2-oxoazetidine-1-sulfonic acid tetra-n-butylammonium salt

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

Conditions
ConditionsYield
With formic acid for 4.5h; Ambient temperature;93%
With formic acid for 5h;70%
With formic acid for 5h; Ambient temperature;56%
(3S-trans)-2-Oxo-3-[[(phenylmethoxy)carbonyl]amino]-4-methyl-1-azetidinesulfonic acid,tetrabutylammonium salt
80082-62-8

(3S-trans)-2-Oxo-3-[[(phenylmethoxy)carbonyl]amino]-4-methyl-1-azetidinesulfonic acid,tetrabutylammonium salt

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

Conditions
ConditionsYield
With hydrogen; palladium on activated charcoal In ethanol50%
tetrabutylammonium (3S,4S)-3-phenylacetamido-4-methyl-2-oxoazetidine-1-sulfonate
80082-64-0

tetrabutylammonium (3S,4S)-3-phenylacetamido-4-methyl-2-oxoazetidine-1-sulfonate

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

Conditions
ConditionsYield
With pyridine; phosgene In dichloromethane at 0℃; for 41h;
(3S,4R)-3-benzyloxycarbonylamino-4-methyl-2-oxoazetidine-1-sulphonic acid sodium salt
115887-91-7

(3S,4R)-3-benzyloxycarbonylamino-4-methyl-2-oxoazetidine-1-sulphonic acid sodium salt

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

Conditions
ConditionsYield
With hydrogen; palladium on activated charcoal In methanol; water for 2h; Ambient temperature;
With nitrogen; palladium In methanol; water
With hydrogenchloride; palladium on activated charcoal; hydrogen In methanol; water for 2h; pH=6.8 - 7;
Stage #1: (3S,4R)-3-benzyloxycarbonylamino-4-methyl-2-oxoazetidine-1-sulphonic acid sodium salt With 5%-palladium/activated carbon; hydrogen In methanol at 15℃; for 4h; Large scale;
Stage #2: With hydrogenchloride In methanol; water at 0℃; for 6h; Large scale;
(3S,trans)-4-methyl-3-triphenylmethylamino-2-azetidinone
88144-19-8

(3S,trans)-4-methyl-3-triphenylmethylamino-2-azetidinone

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

Conditions
ConditionsYield
Yield given. Multistep reaction;
C34H69N3O6S

C34H69N3O6S

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

Conditions
ConditionsYield
With formic acid at 35 - 40℃; for 4.5h; Inert atmosphere;12.7 g
C12H27N*C13H14N2O6S

C12H27N*C13H14N2O6S

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

Conditions
ConditionsYield
With ammonia; lithium at -40℃; for 0.5h;56 g
C10H19N2O9S2(1-)*Na(1+)

C10H19N2O9S2(1-)*Na(1+)

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

Conditions
ConditionsYield
Stage #1: C10H19N2O9S2(1-)*Na(1+) at 45℃; for 1.5h;
Stage #2: With sulfuric acid at 30℃; for 6h;
60 g
tetra(n-butyl)ammonium hydroxide
2052-49-5

tetra(n-butyl)ammonium hydroxide

N-(benzyloxycarbonyl)succinimide
75315-63-8

N-(benzyloxycarbonyl)succinimide

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

(3S-trans)-2-Oxo-3-[[(phenylmethoxy)carbonyl]amino]-4-methyl-1-azetidinesulfonic acid,tetrabutylammonium salt
80082-62-8

(3S-trans)-2-Oxo-3-[[(phenylmethoxy)carbonyl]amino]-4-methyl-1-azetidinesulfonic acid,tetrabutylammonium salt

Conditions
ConditionsYield
Stage #1: N-(benzyloxycarbonyl)succinimide; (3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid With triethylamine In ethanol; water at 25℃; for 16h;
Stage #2: tetra(n-butyl)ammonium hydroxide In water
94%
N-(Benzyloxycarbonyloxy)succinimide
13139-17-8

N-(Benzyloxycarbonyloxy)succinimide

tetra(n-butyl)ammonium hydroxide
2052-49-5

tetra(n-butyl)ammonium hydroxide

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

(3S-trans)-2-Oxo-3-[[(phenylmethoxy)carbonyl]amino]-4-methyl-1-azetidinesulfonic acid,tetrabutylammonium salt
80082-62-8

(3S-trans)-2-Oxo-3-[[(phenylmethoxy)carbonyl]amino]-4-methyl-1-azetidinesulfonic acid,tetrabutylammonium salt

Conditions
ConditionsYield
Stage #1: N-(Benzyloxycarbonyloxy)succinimide; (3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid With triethylamine In ethanol; water at 20℃; for 16h;
Stage #2: tetra(n-butyl)ammonium hydroxide In water
94%
(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

(E)-α-(3-Chloroisoxazol-5-yl)-α-methoxyiminoacetic acid
147742-76-5

(E)-α-(3-Chloroisoxazol-5-yl)-α-methoxyiminoacetic acid

sodium (3S,4S)-3-<(E)-(3-chloroisoxazol-5-yl)(methoxyimino)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

sodium (3S,4S)-3-<(E)-(3-chloroisoxazol-5-yl)(methoxyimino)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

Conditions
ConditionsYield
With ion exchange column (Na form); benzotriazol-1-ol; triethylamine; dicyclohexyl-carbodiimide 1.) DMF, 3 d, 2.) H2O, CH3OH;91%
(isoxazol-3-yl)acetic acid
57612-86-9

(isoxazol-3-yl)acetic acid

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

sodium (3S,4S)-3-<(isoxazol-3-yl)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

sodium (3S,4S)-3-<(isoxazol-3-yl)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

Conditions
ConditionsYield
With ion exchange column (Na form); benzotriazol-1-ol; triethylamine; dicyclohexyl-carbodiimide 1.) DMF, 3 d, 2.) H2O, CH3OH;87%
(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

3-chloro-5-isoxazolecarboxylic acid chloride
104164-45-6

3-chloro-5-isoxazolecarboxylic acid chloride

sodium (3S,4S)-3-<(3-chloroisoxazol-5-yl)carbonylamino>-4-methyl-2-oxoazetidine-1-sulfonate

sodium (3S,4S)-3-<(3-chloroisoxazol-5-yl)carbonylamino>-4-methyl-2-oxoazetidine-1-sulfonate

Conditions
ConditionsYield
With ion exchange column (Na form); triethylamine; dicyclohexyl-carbodiimide 1.) DMF, 0 to 5 deg C, 1 h, 2.) H2O;87%
(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

(Z)-2-<<<1-(2-amino-4-thiazolyl)-2-<(2-benzothiazolyl)thio>-2-oxoethylidene>amino>oxy>-2-methyl propanoic acid 1,1-dimethylethyl ester
89604-92-2

(Z)-2-<<<1-(2-amino-4-thiazolyl)-2-<(2-benzothiazolyl)thio>-2-oxoethylidene>amino>oxy>-2-methyl propanoic acid 1,1-dimethylethyl ester

azthreonam
78110-38-0

azthreonam

Conditions
ConditionsYield
Stage #1: (3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid; (Z)-2-<<<1-(2-amino-4-thiazolyl)-2-<(2-benzothiazolyl)thio>-2-oxoethylidene>amino>oxy>-2-methyl propanoic acid 1,1-dimethylethyl ester With pyridine In acetonitrile at -5℃; for 4h;
Stage #2: With nitric acid at 35℃; for 2h; pH=1; Solvent; Reagent/catalyst; Temperature;
86.9%
(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

(Z)-2-(((1,5-bis(benzhydryloxy)-4-oxo-1,4-dihydropyridin-2-yl)methoxy)imino)-2-(2-(tritylamino)thiazol-4-yl)acetic acid
114875-61-5

(Z)-2-(((1,5-bis(benzhydryloxy)-4-oxo-1,4-dihydropyridin-2-yl)methoxy)imino)-2-(2-(tritylamino)thiazol-4-yl)acetic acid

(3S)-trans-3-[[2-(2-tritylamino)thiazol-4-yl]-(Z)-2-{(1,5-dibenzhydryloxy-4-pyridon-2-ylmethoxy)imino}acetamido]-4-methyl-2-oxoazetidine-1-sulfonic acid
404824-78-8

(3S)-trans-3-[[2-(2-tritylamino)thiazol-4-yl]-(Z)-2-{(1,5-dibenzhydryloxy-4-pyridon-2-ylmethoxy)imino}acetamido]-4-methyl-2-oxoazetidine-1-sulfonic acid

Conditions
ConditionsYield
Stage #1: (3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid; (Z)-2-(((1,5-bis(benzhydryloxy)-4-oxo-1,4-dihydropyridin-2-yl)methoxy)imino)-2-(2-(tritylamino)thiazol-4-yl)acetic acid With benzotriazol-1-ol; dicyclohexyl-carbodiimide In DMF (N,N-dimethyl-formamide) at 20℃; for 0.5h;
Stage #2: With sodium hydrogencarbonate In DMF (N,N-dimethyl-formamide) at 20℃;
85.9%
(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

triethylamine
121-44-8

triethylamine

(S)-3-(3,4-Dihydroxy-phenyl)-2-[(4-ethyl-2,3-dioxo-piperazine-1-carbonyl)-amino]-propionic acid 2,5-dioxo-pyrrolidin-1-yl ester

(S)-3-(3,4-Dihydroxy-phenyl)-2-[(4-ethyl-2,3-dioxo-piperazine-1-carbonyl)-amino]-propionic acid 2,5-dioxo-pyrrolidin-1-yl ester

(2S,3S)-3-{(S)-3-(3,4-Dihydroxy-phenyl)-2-[(4-ethyl-2,3-dioxo-piperazine-1-carbonyl)-amino]-propionylamino}-2-methyl-4-oxo-azetidine-1-sulfonic acid; compound with triethyl-amine

(2S,3S)-3-{(S)-3-(3,4-Dihydroxy-phenyl)-2-[(4-ethyl-2,3-dioxo-piperazine-1-carbonyl)-amino]-propionylamino}-2-methyl-4-oxo-azetidine-1-sulfonic acid; compound with triethyl-amine

Conditions
ConditionsYield
In tetrahydrofuran; water at 20℃; for 3h; Acylation;84%
(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

(5-methoxyisoxazol-3-yl)acetic acid

(5-methoxyisoxazol-3-yl)acetic acid

sodium (3S,4S)-3-<(5-methoxyisoxazol-3-yl)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

sodium (3S,4S)-3-<(5-methoxyisoxazol-3-yl)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

Conditions
ConditionsYield
With ion exchange column (Na form); benzotriazol-1-ol; triethylamine; dicyclohexyl-carbodiimide 1.) DMF, 3 d, 2.) H2O, CH3OH;82%
(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

(5-chloroisoxazol-3-yl)acetic acid

(5-chloroisoxazol-3-yl)acetic acid

sodium (3S,4S)-3-<(5-chloroisoxazol-3-yl)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

sodium (3S,4S)-3-<(5-chloroisoxazol-3-yl)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

Conditions
ConditionsYield
With ion exchange column (Na form); benzotriazol-1-ol; triethylamine; dicyclohexyl-carbodiimide 1.) DMF, 3 d, 2.) H2O, CH3OH;81%
(Z)-2-[[[1-(2-amino-4-thiazolyl)-2-(3-oxido-1H-benzotriazol-1-yl)-2-oxoethylidene]amino]oxy]-2-methylpropanoic acid methanesulfonate (1:1) salt
139714-28-6

(Z)-2-[[[1-(2-amino-4-thiazolyl)-2-(3-oxido-1H-benzotriazol-1-yl)-2-oxoethylidene]amino]oxy]-2-methylpropanoic acid methanesulfonate (1:1) salt

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

azthreonam
78110-38-0

azthreonam

Conditions
ConditionsYield
Stage #1: (Z)-2-[[[1-(2-amino-4-thiazolyl)-2-(3-oxido-1H-benzotriazol-1-yl)-2-oxoethylidene]amino]oxy]-2-methylpropanoic acid methanesulfonate (1:1) salt; (3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid With triethylamine In ethanol; water at -6 - -3℃; for 3h;
Stage #2: With hydrogenchloride In ethanol; water at -3 - 0℃;
81%
C35H38N4O6S2

C35H38N4O6S2

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

(2S,3S)-3-{(S,Z)-5-(tert-butoxycarbonyl)-7-oxo-11-[2-(tritylamino)thiazol-4-yl]- 9-oxa-2-thia-6,10-diazadodec-10-enamido}-2-methyl-4-oxoazetidine-1-sulfonic acid

(2S,3S)-3-{(S,Z)-5-(tert-butoxycarbonyl)-7-oxo-11-[2-(tritylamino)thiazol-4-yl]- 9-oxa-2-thia-6,10-diazadodec-10-enamido}-2-methyl-4-oxoazetidine-1-sulfonic acid

Conditions
ConditionsYield
Stage #1: C35H38N4O6S2 With benzotriazol-1-ol; diisopropyl-carbodiimide In N,N-dimethyl-formamide at 20℃; for 1h;
Stage #2: (3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid With triethylamine In N,N-dimethyl-formamide at 20℃;
78%
(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

(3-Chloroisoxazol-5-yl)acetic acid
54489-25-7

(3-Chloroisoxazol-5-yl)acetic acid

sodium (3S,4S)-<(3-chloroisoxazol-5-yl)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

sodium (3S,4S)-<(3-chloroisoxazol-5-yl)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

Conditions
ConditionsYield
With ion exchange column (Na form); triethylamine; dicyclohexyl-carbodiimide 1.) DMF, 24 h, 2.) H2O, CH3OH;75%
(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

(4-Cyano-5-methylisoxazol-3-yl)acetic acid
93276-75-6

(4-Cyano-5-methylisoxazol-3-yl)acetic acid

sodium (3S,4S)-3-<(4-cyano-5-methylisoxazol-3-yl)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

sodium (3S,4S)-3-<(4-cyano-5-methylisoxazol-3-yl)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

Conditions
ConditionsYield
With ion exchange column (Na form); triethylamine; dicyclohexyl-carbodiimide 1.) DMF, 24 h, 2.) H2O, CH3OH;73%
(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

(Z)-α-(3-Chloroisoxazol-5-yl)-α-methoxyiminoacetic acid
147742-85-6

(Z)-α-(3-Chloroisoxazol-5-yl)-α-methoxyiminoacetic acid

sodium (3S,4S)-3-<(Z)-(3-chloroisoxazol-5-yl)(methoxyimino)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

sodium (3S,4S)-3-<(Z)-(3-chloroisoxazol-5-yl)(methoxyimino)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

Conditions
ConditionsYield
With ion exchange column (Na form); benzotriazol-1-ol; triethylamine; dicyclohexyl-carbodiimide 1.) DMF, 3 d, 2.) H2O, CH3OH;62%
(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

triethylamine
121-44-8

triethylamine

(3,4-dihydroxy-phenylsulfanyl)-acetic acid 2,5-dioxo-pyrrolidin-1-yl ester

(3,4-dihydroxy-phenylsulfanyl)-acetic acid 2,5-dioxo-pyrrolidin-1-yl ester

(2S,3S)-3-[2-(3,4-Dihydroxy-phenylsulfanyl)-acetylamino]-2-methyl-4-oxo-azetidine-1-sulfonic acid; compound with triethyl-amine

(2S,3S)-3-[2-(3,4-Dihydroxy-phenylsulfanyl)-acetylamino]-2-methyl-4-oxo-azetidine-1-sulfonic acid; compound with triethyl-amine

Conditions
ConditionsYield
In tetrahydrofuran; water at 20℃; for 3h; Acylation;59%
(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

α-tert-Butyloxycarbonylamino-α-(3-chloroisoxazol-5-yl)acetic Acid
147742-81-2

α-tert-Butyloxycarbonylamino-α-(3-chloroisoxazol-5-yl)acetic Acid

sodium (3S,4S)-3-<(tert-butoxycarbonylamino)(3-chloroisoxazol-5-yl)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

sodium (3S,4S)-3-<(tert-butoxycarbonylamino)(3-chloroisoxazol-5-yl)acetylamino>-4-methyl-2-oxoazetidine-1-sulfonate

Conditions
ConditionsYield
With ion exchange column (Na form); benzotriazol-1-ol; triethylamine; dicyclohexyl-carbodiimide 1.) DMF, 3 d, 2.) H2O, CH3OH;57%
(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

triethylamine
121-44-8

triethylamine

(2-tert-butoxycarbonylamino-thiazol-4-yl)-[4-(N'-tert-butoxycarbonyl-hydrazinocarbonyl)-benzyloxyimino]-acetic acid [1,2,3]triazolo[4,5-b]pyridin-3-yl ester

(2-tert-butoxycarbonylamino-thiazol-4-yl)-[4-(N'-tert-butoxycarbonyl-hydrazinocarbonyl)-benzyloxyimino]-acetic acid [1,2,3]triazolo[4,5-b]pyridin-3-yl ester

trans-3-[(Z)-2-[2-(tert-butoxycarbonylamino)thiazol-4-yl]-2-[[4-[[2-(tert-butoxycarbonyl)hydrazino]carbonyl]benzyloxy]imino]acetamido]-4-methyl-2-oxoazetidine-1-sulfonic acid triethylammonium salt

trans-3-[(Z)-2-[2-(tert-butoxycarbonylamino)thiazol-4-yl]-2-[[4-[[2-(tert-butoxycarbonyl)hydrazino]carbonyl]benzyloxy]imino]acetamido]-4-methyl-2-oxoazetidine-1-sulfonic acid triethylammonium salt

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 20℃; Acylation;53%
α-methyl-4-chlorobenzylideneaminoxy propionic acid
63564-50-1

α-methyl-4-chlorobenzylideneaminoxy propionic acid

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

Sodium; (2S,3S)-3-{3-[1-(4-chloro-phenyl)-eth-(E)-ylideneaminooxy]-propionylamino}-2-methyl-4-oxo-azetidine-1-sulfonate
134468-86-3

Sodium; (2S,3S)-3-{3-[1-(4-chloro-phenyl)-eth-(E)-ylideneaminooxy]-propionylamino}-2-methyl-4-oxo-azetidine-1-sulfonate

Conditions
ConditionsYield
With benzotriazol-1-ol; triethylamine; dicyclohexyl-carbodiimide 1) DMF, 30 min, r.t 2) DMF, 18h, r.t.; Yield given. Multistep reaction;
3-(isopropylidenamino)oxy-propanoic acid
103586-55-6

3-(isopropylidenamino)oxy-propanoic acid

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

Sodium; (2S,3S)-3-(3-isopropylideneaminooxy-propionylamino)-2-methyl-4-oxo-azetidine-1-sulfonate
134468-81-8

Sodium; (2S,3S)-3-(3-isopropylideneaminooxy-propionylamino)-2-methyl-4-oxo-azetidine-1-sulfonate

Conditions
ConditionsYield
With benzotriazol-1-ol; triethylamine; dicyclohexyl-carbodiimide 1) DMF, 30 min, r.t 2) DMF, 18h, r.t.; Yield given. Multistep reaction;
3-(1-Propyl-butylideneaminooxy)-propionic acid
103586-56-7

3-(1-Propyl-butylideneaminooxy)-propionic acid

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

Sodium; (2S,3S)-2-methyl-4-oxo-3-[3-(1-propyl-butylideneaminooxy)-propionylamino]-azetidine-1-sulfonate
134468-83-0

Sodium; (2S,3S)-2-methyl-4-oxo-3-[3-(1-propyl-butylideneaminooxy)-propionylamino]-azetidine-1-sulfonate

Conditions
ConditionsYield
With benzotriazol-1-ol; triethylamine; dicyclohexyl-carbodiimide 1) DMF, 30 min, r.t 2) DMF, 18h, r.t.; Yield given. Multistep reaction;
3-Cyclopentylideneaminooxy-propionic acid
103586-53-4

3-Cyclopentylideneaminooxy-propionic acid

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

Sodium; (2S,3S)-3-(3-cyclopentylideneaminooxy-propionylamino)-2-methyl-4-oxo-azetidine-1-sulfonate
134468-82-9

Sodium; (2S,3S)-3-(3-cyclopentylideneaminooxy-propionylamino)-2-methyl-4-oxo-azetidine-1-sulfonate

Conditions
ConditionsYield
With benzotriazol-1-ol; triethylamine; dicyclohexyl-carbodiimide 1) DMF, 30 min, r.t 2) DMF, 18h, r.t.; Yield given. Multistep reaction;
3-[1-Phenyl-eth-(E)-ylideneaminooxy]-propionic acid
103586-52-3

3-[1-Phenyl-eth-(E)-ylideneaminooxy]-propionic acid

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

Sodium; (2S,3S)-2-methyl-4-oxo-3-{3-[1-phenyl-eth-(E)-ylideneaminooxy]-propionylamino}-azetidine-1-sulfonate
134468-85-2

Sodium; (2S,3S)-2-methyl-4-oxo-3-{3-[1-phenyl-eth-(E)-ylideneaminooxy]-propionylamino}-azetidine-1-sulfonate

Conditions
ConditionsYield
With benzotriazol-1-ol; triethylamine; dicyclohexyl-carbodiimide 1) DMF, 30 min, r.t 2) DMF, 18h, r.t.; Yield given. Multistep reaction;
(E)-3-<(benzylidene)iminoxy>-(E)-2-(methoxyimino)propionic acid
110596-23-1

(E)-3-<(benzylidene)iminoxy>-(E)-2-(methoxyimino)propionic acid

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

Sodium; (2S,3S)-3-{2-[(E)-methoxyimino]-3-[1-phenyl-meth-(E)-ylideneaminooxy]-propionylamino}-2-methyl-4-oxo-azetidine-1-sulfonate
134468-87-4

Sodium; (2S,3S)-3-{2-[(E)-methoxyimino]-3-[1-phenyl-meth-(E)-ylideneaminooxy]-propionylamino}-2-methyl-4-oxo-azetidine-1-sulfonate

Conditions
ConditionsYield
With benzotriazol-1-ol; triethylamine; dicyclohexyl-carbodiimide 1) DMF, 30 min, r.t 2) DMF, 18h, r.t.; Yield given. Multistep reaction;
(E)-3-<<(benzylidene)methyl>iminoxy>-(E)-2-(methoxyimino)propionic acid
110596-24-2

(E)-3-<<(benzylidene)methyl>iminoxy>-(E)-2-(methoxyimino)propionic acid

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
80082-65-1

(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid

Sodium; (2S,3S)-3-{2-[(E)-methoxyimino]-3-[1-phenyl-eth-(E)-ylideneaminooxy]-propionylamino}-2-methyl-4-oxo-azetidine-1-sulfonate
134468-91-0

Sodium; (2S,3S)-3-{2-[(E)-methoxyimino]-3-[1-phenyl-eth-(E)-ylideneaminooxy]-propionylamino}-2-methyl-4-oxo-azetidine-1-sulfonate

Conditions
ConditionsYield
With benzotriazol-1-ol; triethylamine; dicyclohexyl-carbodiimide 1) DMF, 30 min, r.t 2) DMF, 18h, r.t.; Yield given. Multistep reaction;

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