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
Cas:115887-91-7
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryJ&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
Cas:115887-91-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryZibo Hangyu Biotechnology Development 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 chemi
Cas:115887-91-7
Min.Order:10 Gram
Negotiable
Type:Lab/Research institutions
inquiryGMP 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,
Cas:115887-91-7
Min.Order:1 Milligram
Negotiable
Type:Trading Company
inquiryZhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed
Cas:115887-91-7
Min.Order:1 Kilogram
FOB Price: $2.0
Type:Lab/Research institutions
inquiryHigh quality,stable supply chain.Appearance:white/off-white or light yellow Storage:Store in cool and dry place, keep away from strong light and heat. Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Application:This product can be use
Cas:115887-91-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryhigh purity,in stock Package:25kg/drum,or as per customers'demand Application:API,or Intermediates,fine chemicals Transportation:air,sea,courier
Cas:115887-91-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryfactory?direct?sale Application:healing drugs
Cas:115887-91-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryFactory supply high purity low priceAppearance:solid or liquid Storage:sealed in cool and dry place Package:As customer's requested Application:Pharma Intermediate Transportation:by courier/air/sea Port:Any port in China
Cas:115887-91-7
Min.Order:0
Negotiable
Type:Trading Company
inquiryfactory?direct?sale Application:Fine chemical intermediates, used as the main raw material for the synthesis of various pesticides, medicines, surfactants, polymer monomers, and antifungal agents
Cas:115887-91-7
Min.Order:0
Negotiable
Type:Other
inquiry
Cas:115887-91-7
Min.Order:1 Kilogram
Negotiable
Type:Trading Company
inquiryinstock with good quality and wholesale price Storage:Keep in a cool & dry place Package:Packing material and QTY as your request Application:Pharma;Industry;other application Transportation:Express or as your request Port:Any port of China
Cas:115887-91-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryCas:115887-91-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry(3S,4R)-3-benzyloxycarbonylamino-4-methyl-2-oxoazetidine-1-sulphonic acid sodium salt
Conditions | Yield |
---|---|
With sodium hydroxide In water at 2 - 80℃; for 4h; pH=9; Temperature; pH-value; | 80.8% |
(3S,4R)-3-benzyloxycarbonylamino-4-iodomethyl-2-oxoazetidine-1-sulphonic acid tetrabutylammonium salt
(3S,4R)-3-benzyloxycarbonylamino-4-methyl-2-oxoazetidine-1-sulphonic acid sodium salt
Conditions | Yield |
---|---|
With Dowex 50 Wx4 resin; Na form; tri-n-butyl-tin hydride In tetrahydrofuran for 2h; Ambient temperature; |
(3S,4R)-3-benzyloxycarbonylamino-4-mesyloxymethyl-2-oxoazetidine-1-sulphonic acid tetrabutylammonium salt
(3S,4R)-3-benzyloxycarbonylamino-4-methyl-2-oxoazetidine-1-sulphonic acid sodium salt
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 50 percent / sodium iodide / acetonitrile / 3 h / Heating 2: tributyltin hydride, Dowex 50 Wx4 resin, Na form / tetrahydrofuran / 2 h / Ambient temperature View Scheme |
(3R,4R)-3-benzyloxycarbonylamino-4-hydroxymethyl-2-oxoazetidine-1-sulphonic acid tetrabutylammonium salt
(3S,4R)-3-benzyloxycarbonylamino-4-methyl-2-oxoazetidine-1-sulphonic acid sodium salt
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 98 percent / pyridine / 1 h / -20 °C 2: 50 percent / sodium iodide / acetonitrile / 3 h / Heating 3: tributyltin hydride, Dowex 50 Wx4 resin, Na form / tetrahydrofuran / 2 h / Ambient temperature View Scheme |
(3S,4R)-3-benzyloxycarbonylamino-4-methyl-2-oxoazetidine-1-sulphonic acid sodium salt
Conditions | Yield |
---|---|
With sodium carbonate In water pH=8.25 - 8.35; Large scale; | 50 kg |
methyl (2S,3R)-2-(benzyloxycarbonylamino)-3-hydroxybutyrate
(3S,4R)-3-benzyloxycarbonylamino-4-methyl-2-oxoazetidine-1-sulphonic acid sodium salt
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: ammonia / methanol / Large scale 2: α-picoline / dichloromethane / Large scale 3: chlorosulfonic acid / Large scale 4: sodium carbonate / water / pH 8.25 - 8.35 / Large scale View Scheme |
benzyl ((2S,3R)-1-amino-3-hydroxy-1-oxobutan-2-yl)carbamate
(3S,4R)-3-benzyloxycarbonylamino-4-methyl-2-oxoazetidine-1-sulphonic acid sodium salt
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: α-picoline / dichloromethane / Large scale 2: chlorosulfonic acid / Large scale 3: sodium carbonate / water / pH 8.25 - 8.35 / Large scale View Scheme | |
Multi-step reaction with 3 steps 1: α-picoline / dichloromethane; toluene / 10 h / 35 °C 2: chlorosulfonic acid / 10 h / -5 - 45 °C 3: sodium hydroxide / water / 4 h / 2 - 80 °C / pH 9 View Scheme |
(3S,4R)-3-benzyloxycarbonylamino-4-methyl-2-oxoazetidine-1-sulphonic acid sodium salt
(3S-trans)-3-Amino-4-methyl-2-oxo-1-azetidinesulfonic acid
Conditions | Yield |
---|---|
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; |
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