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Dayang Chem (Hangzhou) Co.,Ltd.

Dayangchem's 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. DayangChem can provide different quantities

L-Cystine

Cas:56-89-3

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

Why Choose Us 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 eac

Cinese Supplier New Product L-Cystine for Nutritional Supplements

Cas:56-89-3

Min.Order:1 Metric Ton

FOB Price: $0.2 / 1.0

Type:Trading Company

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Wuxi TAA Chemical Industry Co.,LTD.

1.A strong technical force and advanced processing equipments. The quality of the products has been strictly inspected and all kinds of index have reached or exceeded domestic and international standards. 2. Now we have established long-term stab

Factory supply Cystine/CAS 56-89-3

Cas:56-89-3

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

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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 L-Cystine supplier in China

Cas:56-89-3

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

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Hangzhou Dingyan Chem Co., Ltd

Items Standard Result Appearance White or off-white crystalline powder Conform Assay 98.5 %

High purity 56-89-3

Cas:56-89-3

Min.Order:1 Gram

FOB Price: $100.0 / 500.0

Type:Trading Company

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Jinan Finer Chemical Co., Ltd

Product description: Product name L-Cystine CAS number 56-89-3 Assay ≥98% Appearance White crystalline powder Capacity 100mt/year Application Used in medicine, food, cosmetic

L-Cystine

Cas:56-89-3

Min.Order:10 Gram

FOB Price: $12.0

Type:Lab/Research institutions

inquiry

Wuhan Fortuna Chemical Co.,Ltd

Unique advantages of L-Cystine Cas 56-89-3 Guaranteed purity High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:White crystals or crystalline powder Storage:cool dry place Package:25kg/drum Appl

Manufacturer high quality L-Cystine Cas 56-89-3 with low price

Cas:56-89-3

Min.Order:25 Kilogram

Negotiable

Type:Trading Company

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Hebei yanxi chemical co.,LTD.

Hebei yanxi chemical co., LTD is a professional research, development and production Cyromazine、Azamethiphos、lead diacetate trihydrate /Lead acetate trihydrateC、 2-phenylacetamide 、 4-Aminophenyl-1-phenethylpiperidine 、Citric acid monohydrate 、

L-Cystine CAS NO.56-89-3

Cas:56-89-3

Min.Order:1 Kilogram

FOB Price: $11.0 / 16.0

Type:Manufacturers

inquiry

Hefei TNJ chemical industry co.,ltd

L-Cystine Properties:White crystal or crystalline powder, odorless, flavorless, almost insoluble in water or ethanol, soluble in diluted acid or basic hydroxide solutions. Quality index: Item I

L-Cystine factory

Cas:56-89-3

Min.Order:25 Kilogram

Negotiable

Type:Trading Company

inquiry

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

Factory Supply L-Cystine

Cas:56-89-3

Min.Order:1

Negotiable

Type:Other

inquiry

Xi'an Xszo Chem Co., Ltd.

1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s

High Quality 99% L-Cystine 56-89-3 ISO Producer

Cas:56-89-3

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

inquiry

Chengdu Lemeitian Pharmaceutical Technology Co,. Ltd

ADVANTAGE: 1. More than 3,000 Chinese medicine reference substances / standard products available from stock, issued on the same day, multiple cities can be delivered the next day 2. The products are provided with COA, HPLC, NMR, quality assurance,

L-Cystine

Cas:56-89-3

Min.Order:5 Milligram

Negotiable

Type:Manufacturers

inquiry

Shanxi Zorui Biotechnology Co.Ltd.

Zorui combines R&D, production and sales into its operations, While continuously providing high-quality raw materials, we also provide and optimize technical solutions for customers to achieve mutual benefit. We adhere to the "quality, integ

L-Cystine Powder Amino Acid Powder Cystine CAS 56-89-3

Cas:56-89-3

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

COLORCOM LTD.

Colorcom is a global leader in industrial chemical manufacturing and is continuously innovating and transforming to exceed client expectations and industry standards. Colorcom prides itself on superior customer and technical focus, while focusing on

L-Cystine

Cas:56-89-3

Min.Order:1 Metric Ton

Negotiable

Type:Manufacturers

inquiry

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

L-Cystine

Cas:56-89-3

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

inquiry

Henan Tianfu Chemical Co., Ltd.

Our company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O

L-Cystine 56-89-3

Cas:56-89-3

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

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

New production CAS 56-89-3 with best quality

Cas:56-89-3

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

inquiry

Wuhan Han Sheng New Material Technology Co.,Ltd

Our Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We

L-Cystine

Cas:56-89-3

Min.Order:10 Kilogram

Negotiable

Type:Trading Company

inquiry

Henan Sinotech Import&Export Corporation

Product name L-Cystine Specification 99% Test Method HPLC Particle Size 98% pass 80 mesh Appearance: white powder Storage:Store i

L-Cystine Food grade

Cas:56-89-3

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

inquiry

Hangzhou JINLAN Pharm-Drugs Technology Co., Ltd

We can provide GMP validation service that complies with SFDA, FDA, WHO and EU EMPA.Excellent registration team could help us easlily to register our products in different countries.If you and your customer are interested in some products or need CMO

L-Cystine manufacturer/supplier

Cas:56-89-3

Min.Order:1 Gram

Negotiable

Type:Trading Company

inquiry

Hangzhou Sartort Biopharma Co., Ltd

Appearance:White crystalline powder Storage:Room temperature Package:25kg/drum Application:Amino acid Transportation:Express/Sea/Air Port:Any port in china

Bulk Stock L-Cystine for Nutritional Supplements CAS:56-89-3

Cas:56-89-3

Min.Order:25 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Hubei Langyou International Trading Co., Ltd

Our Adwantage: 1.We have stock so we can delivery quickly at the very day when receive the payment. 2.Best price, first class service, high successful delivery rate. A discount would be given when you make a large order. 3.High qu

L-Cystine CAS 56-89-3 Racemic Amines

Cas:56-89-3

Min.Order:10 Gram

Negotiable

Type:Other

inquiry

HANWAYS CHEMPHARM CO.,LIMITED

1.Prompt Goods; 2.Flexible payment terms; 3.Documents & Certificate support. Name: L-Cystine Molecular Structure: Formula: C6H12N2O4S2 Molecular Weight : 240.3 Synonyms: (r-(r*,r*))-3,3’-dithiobis(2-aminopropanoicacid);1-cystine;3,3

L-Cystine

Cas:56-89-3

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

Shanghai Upbio Tech Co.,Ltd

1,In No Less five years exporting experience. 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Appearance:White powder Storage:storage in a dr

key product L-Cystine 98.0%

Cas:56-89-3

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Lab/Research institutions

inquiry

Xi'an Faithful Biotech Co., Ltd.

We are the manufacturers and suppliers of API in China, and warehouse in Germany and USA of California, which can quickly and safely deliver to your address 1.High quality and competitive price. 2.Free sample for your evaluation. 3.Promptly delivery

Baoji Guokang Healthchem co.,ltd

Our company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At present

A non-essential amino acid L-Cystine with CAS:56-89-3

Cas:56-89-3

Min.Order:1 Kilogram

FOB Price: $24.0 / 30.0

Type:Trading Company

inquiry

Qingdao Beluga Import and Export Co., LTD

L-Cystine CAS: 56-89-3 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organic intermediates, st

L-Cystine CAS: 56-89-3

Cas:56-89-3

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Shandong Hanjiang Chemical Co., Ltd.

Hello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai

L-Cystine

Cas:56-89-3

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Hubei Jiutian Bio-medical Technology Co., Ltd

1,we produce and sell good chemicals around the world. 2,our success rate is about 95%. this means, if customer order is accepted, the probability that the customer will obtain the ordered substances, is 95%. 3,our staff consists of highly qualifie

L-Cystine

Cas:56-89-3

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Mojin Biotechnology Co.,Ltd

Hebei Mojin Biological Technology Co., Ltd. is specialize in the production of chemical raw materials and reagents,located in Shijiazhuang, Hebei Province. In recent decades, under the efforts of all staff, in Shandong, Henan, Guangdong and many othe

High purity L-Cystine CAS 56-89-3

Cas:56-89-3

Min.Order:1 Kilogram

FOB Price: $20.0 / 40.0

Type:Trading Company

inquiry

Synthetic route

L-Cysteine
52-90-4

L-Cysteine

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With 3-bromo-2-(1-hydroxycyclohexyl)[1,2]selenazolo[2,3-a]pyridinium chloride; dihydrogen peroxide In methanol; water at 20℃; for 0.166667h;100%
With dihydrogen peroxide; sodium iodide In water at 25℃; for 1h; Cooling with ice;100%
With bis(4-methoxyphenyl)telluride; rose bengal In water; isopropyl alcohol at 0℃; for 0.833333h; Irradiation;99%
L-Cysteine
52-90-4

L-Cysteine

(R)-2-Amino-3-(4-methoxy-phenylmethanesulfinyl)-propionic acid
73243-09-1

(R)-2-Amino-3-(4-methoxy-phenylmethanesulfinyl)-propionic acid

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With dimethylsulfide; trifluorormethanesulfonic acid In trifluoroacetic acid at 0℃; for 1h;100%
(R)-9H-fluorenyl-9-methyl-L-cysteine
84888-38-0

(R)-9H-fluorenyl-9-methyl-L-cysteine

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With piperidine In N,N-dimethyl-formamide for 2h;100%
S-nitroso-L-cysteine
134469-02-6, 51209-75-7

S-nitroso-L-cysteine

A

L-cystine
56-89-3

L-cystine

B

NO

NO

Conditions
ConditionsYield
With copper(II) ion In water at 25℃; Rate constant; var. conc. of Cu2+;A 100%
B n/a
(R)-S-tert-butylcysteine
2481-10-9

(R)-S-tert-butylcysteine

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With Methyltrichlorosilane; 1,1'-sulfinylbisbenzene at 4℃; for 0.166667h;99%
L-Cysteine
52-90-4

L-Cysteine

H-Cys(Acm)(O)-OH
75893-05-9

H-Cys(Acm)(O)-OH

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With dimethylsulfide In trifluoroacetic acid at 0℃; for 1h;97.9%
Reaxys ID: 11465027

Reaxys ID: 11465027

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With sodium hydroxide In water at 20 - 60℃; for 2h; pH=~ 4.0;97%
With ammonia In water at 20 - 60℃; for 0.666667 - 2h; pH=~ 3.0;97%
With ammonia In water at 20 - 80℃; for 2h; pH=~ 2.3 - ~ 3.0;95%
L-Cysteine
52-90-4

L-Cysteine

N-(benzoylsulfide)benzamide
134861-13-5

N-(benzoylsulfide)benzamide

A

L-cystine
56-89-3

L-cystine

B

benzamide
55-21-0

benzamide

C

D-N-benzoylcysteine

D-N-benzoylcysteine

Conditions
ConditionsYield
In methanol; aq. phosphate buffer at 20℃; pH=7.4;A 95%
B 96%
C 80%
S-(4-methoxybenzyl)-L-cysteine
2544-31-2

S-(4-methoxybenzyl)-L-cysteine

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With Methyltrichlorosilane; 1,1'-sulfinylbisbenzene at 4℃; for 0.166667h;95%
With methoxybenzene; thallium(III) trifluoroacetate In trifluoroacetic acid at 0℃; for 1h;86.7%
With methoxybenzene; thallium(III) trifluoroacetate In trifluoroacetic acid at 0℃; for 1h; Product distribution; cleavage various S-protecting groups of cystein;86.7%
S-acetamidomethyl-L-cysteine
19647-70-2

S-acetamidomethyl-L-cysteine

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With Methyltrichlorosilane; 1,1'-sulfinylbisbenzene at 4℃; for 0.5h;93%
With Methyltrichlorosilane; 1,1'-sulfinylbisbenzene at 4℃; for 0.5h; Product distribution; other S-protected cysteines;93%
(R)-2-Amino-3-(4-methoxy-phenylmethanesulfinyl)-propionic acid
73243-09-1

(R)-2-Amino-3-(4-methoxy-phenylmethanesulfinyl)-propionic acid

H-Cys(Ad)-OH
59709-71-6

H-Cys(Ad)-OH

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With dimethylsulfide; trifluorormethanesulfonic acid In trifluoroacetic acid at 0℃; for 1h;92.4%
S-(4-methoxybenzyl)-L-cysteine
2544-31-2

S-(4-methoxybenzyl)-L-cysteine

(R)-2-Amino-3-(4-methoxy-phenylmethanesulfinyl)-propionic acid
73243-09-1

(R)-2-Amino-3-(4-methoxy-phenylmethanesulfinyl)-propionic acid

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With dimethylsulfide; trifluorormethanesulfonic acid In trifluoroacetic acid at 0℃; for 1h;92.2%
S-(diphenyl-4-pyridylmethyl)-L-cysteine
62982-12-1

S-(diphenyl-4-pyridylmethyl)-L-cysteine

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
In hydrogenchloride; acetic acid at 0℃; for 0.75h; electrolysis (mercury cathode, 250 mA);91%
S-benzyloxymethylcysteine
123043-33-4

S-benzyloxymethylcysteine

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With methoxybenzene; thallium(III) trifluoroacetate In trifluoroacetic acid88.8%
With methoxybenzene; thallium(III) trifluoroacetate In trifluoroacetic acid Product distribution; other reagent;88.8%
S-Trimethylacetamidomethyl-L-cysteine (H-Cys(Tacm)OH)
125700-47-2

S-Trimethylacetamidomethyl-L-cysteine (H-Cys(Tacm)OH)

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With Methyltrichlorosilane; 1,1'-sulfinylbisbenzene at 4℃; for 0.5h;88%
With iodine In acetic acid at 25℃; for 1h;83%
With iodine In acetic acid at 25℃; for 1h; stability of protecting group under various conditions, various reagents, other substrates;83%
H-Cys(Ad)-OH
59709-71-6

H-Cys(Ad)-OH

H-Cys(Acm)(O)-OH
75893-05-9

H-Cys(Acm)(O)-OH

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With dimethylsulfide; trimethylsilyl trifluoromethanesulfonate In trifluoroacetic acid at 0℃; for 1h;86.3%
S-(4-methoxybenzyl)-L-cysteine
2544-31-2

S-(4-methoxybenzyl)-L-cysteine

H-Cys(Acm)(O)-OH
75893-05-9

H-Cys(Acm)(O)-OH

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With dimethylsulfide In trifluoroacetic acid at 25℃; for 1h;85.3%
N-t-butoxycarbonyl-S-acetamidomethyl-L-cysteine
19746-37-3

N-t-butoxycarbonyl-S-acetamidomethyl-L-cysteine

A

L-cystine
56-89-3

L-cystine

B

S-acetamidomethyl-L-cysteine
19647-70-2

S-acetamidomethyl-L-cysteine

Conditions
ConditionsYield
With Methyltrichlorosilane; 1,1'-sulfinylbisbenzene; trifluoroacetic acid at 4℃; for 0.166667h; Product distribution; Mechanism; var. reaction times, silyl chlorides and sulfoxides; other S-protected cystine-peptides;A 79%
B 15%
S-Benzamidomethyl-L-cystein
57357-62-7

S-Benzamidomethyl-L-cystein

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With Methyltrichlorosilane; 1,1'-sulfinylbisbenzene at 4℃; for 0.5h;76%
S-<(4-methylphenyl)methyl>-L-cysteine
42294-52-0

S-<(4-methylphenyl)methyl>-L-cysteine

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With Methyltrichlorosilane; 1,1'-sulfinylbisbenzene at 4℃; for 0.166667h;49%
With dimethyl sulfoxide; methoxybenzene; trifluoroacetic acid Ambient temperature;
(+)-D-glucosamine hydrochloride
1078691-95-8

(+)-D-glucosamine hydrochloride

A

L-cystine
56-89-3

L-cystine

B

2-(D-arabino-1',2',3',4'-tetrahydroxybutyl)-5-(D-erythro-2",3",4"-trihydroxybutyl)piperazine
17460-13-8

2-(D-arabino-1',2',3',4'-tetrahydroxybutyl)-5-(D-erythro-2",3",4"-trihydroxybutyl)piperazine

Conditions
ConditionsYield
With pyridine; l-cysteine hydrochloride In methanol; water for 32h; Heating;A n/a
B 45%
Boc-Cys(Acm)(O)-OH
75893-04-8

Boc-Cys(Acm)(O)-OH

phenol
108-95-2

phenol

A

L-cystine
56-89-3

L-cystine

B

S-(4-hydroxyphenyl)-L-cysteine
73243-10-4

S-(4-hydroxyphenyl)-L-cysteine

Conditions
ConditionsYield
With hydrogenchloride at 110℃; for 24h;A 16%
B 41%
H-Cys(Acm)(O)-OH
75893-05-9

H-Cys(Acm)(O)-OH

A

L-Cysteine
52-90-4

L-Cysteine

B

L-Cysteic acid
498-40-8

L-Cysteic acid

C

L-cystine
56-89-3

L-cystine

D

S-acetamidomethyl-L-cysteine
19647-70-2

S-acetamidomethyl-L-cysteine

Conditions
ConditionsYield
With ammonia; sodium for 0.00277778h; Product distribution;A n/a
B 19%
C 10%
D 21%
L-Cysteine
52-90-4

L-Cysteine

(R)-3-(Adamantane-1-sulfinyl)-2-amino-propionic acid

(R)-3-(Adamantane-1-sulfinyl)-2-amino-propionic acid

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With dimethylsulfide; trifluorormethanesulfonic acid In trifluoroacetic acid at 0℃; for 1h;20.8%
S-(4-methoxybenzyl)-L-cysteine
2544-31-2

S-(4-methoxybenzyl)-L-cysteine

(R)-3-(Adamantane-1-sulfinyl)-2-amino-propionic acid

(R)-3-(Adamantane-1-sulfinyl)-2-amino-propionic acid

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With dimethylsulfide; trifluorormethanesulfonic acid In trifluoroacetic acid at 0℃; for 1h;15.5%
H-Cys(Ad)-OH
59709-71-6

H-Cys(Ad)-OH

(R)-3-(Adamantane-1-sulfinyl)-2-amino-propionic acid

(R)-3-(Adamantane-1-sulfinyl)-2-amino-propionic acid

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
With dimethylsulfide; trifluorormethanesulfonic acid In trifluoroacetic acid at 0℃; for 1h;10.5%
L-serin
56-45-1

L-serin

L-cystine
56-89-3

L-cystine

Conditions
ConditionsYield
im Organismus der Ratte;
L-cystine
56-89-3

L-cystine

methyl chloroformate
79-22-1

methyl chloroformate

(R,R)-N,N'-dimethoxycarbonyl-3,3'-dithiobis(2-aminopropionic acid)
78589-87-4

(R,R)-N,N'-dimethoxycarbonyl-3,3'-dithiobis(2-aminopropionic acid)

Conditions
ConditionsYield
With sodium hydroxide; sodium carbonate at 20℃; for 2h; pH=8 - 9;100%
With sodium carbonate In tetrahydrofuran; water at 20℃; for 16h;65%
L-cystine
56-89-3

L-cystine

di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

di-t-butoxycarbonyl-L-cystine
10389-65-8

di-t-butoxycarbonyl-L-cystine

Conditions
ConditionsYield
With sodium carbonate In 1,4-dioxane; water at 20℃;100%
With triethylamine In water Cooling with ice;96%
With triethylamine In water at 20℃; for 2h;95%
L-cystine
56-89-3

L-cystine

toluene-4-sulfonic acid
104-15-4

toluene-4-sulfonic acid

allyl alcohol
107-18-6

allyl alcohol

L-cystine-bis-allyl ester bis-(toluene-4-sulfonate)

L-cystine-bis-allyl ester bis-(toluene-4-sulfonate)

Conditions
ConditionsYield
In benzene at 90℃; for 16h;100%
In benzene for 12h; Esterification; Heating;95%
methanol
67-56-1

methanol

L-cystine
56-89-3

L-cystine

L-cystine dimethyl ester dihydrochloride
32854-09-4

L-cystine dimethyl ester dihydrochloride

Conditions
ConditionsYield
With chloro-trimethyl-silane100%
With thionyl chloride at 25℃; for 24h; Schlenk technique; Inert atmosphere;99%
With thionyl chloride for 20h; Reflux;98%
L-cystine
56-89-3

L-cystine

benzyl chloroformate
501-53-1

benzyl chloroformate

N,N'-bis(benzyloxycarbonyl)-L-cystine
6968-11-2

N,N'-bis(benzyloxycarbonyl)-L-cystine

Conditions
ConditionsYield
With sodium hydrogencarbonate In water at 20℃;99%
Stage #1: L-cystine; benzyl chloroformate With sodium hydroxide In tetrahydrofuran; water at 20℃; for 3.25h; pH=10; Cooling with ice; Inert atmosphere;
Stage #2: With hydrogenchloride In water pH=2; Inert atmosphere;
98%
With sodium hydroxide at 0℃; for 4h;72%
L-cystine
56-89-3

L-cystine

L-Cysteine
52-90-4

L-Cysteine

Conditions
ConditionsYield
With ethandithiol at 40℃; for 5h; pH=7.5 adjusted with 5 percent NH4OH;98.5%
With ammonia; sodium Reduction;90%
With hydrogenchloride; tin man verduennt die Loesung, befreit sie mit H2S vom Zinn, verdunstet zur Trockne, loest den Rueckstand in Alkohol und faellt vorsichtig mit Ammoniak;
methanol
67-56-1

methanol

L-cystine
56-89-3

L-cystine

L-cystine dimethyl ester
1069-29-0

L-cystine dimethyl ester

Conditions
ConditionsYield
With thionyl chloride for 12.5h; Cooling with ice;98%
With hydrogenchloride man zersetzt das Hydrochlorid mit Natriummethylat;
With thionyl chloride
With thionyl chloride at 0℃; for 12h; Inert atmosphere; Reflux;
With thionyl chloride at 0℃; for 12h; Reflux;12.4 g
L-cystine
56-89-3

L-cystine

chloroformic acid ethyl ester
541-41-3

chloroformic acid ethyl ester

(R,R)-N,N'-diethoxycarbonyl-3,3'-dithiobis(2-aminopropionic acid)
19887-39-9

(R,R)-N,N'-diethoxycarbonyl-3,3'-dithiobis(2-aminopropionic acid)

Conditions
ConditionsYield
With sodium hydroxide; sodium carbonate at 20℃; for 1.5h; pH=8 - 9;98%
With sodium hydroxide98%
L-cystine
56-89-3

L-cystine

(fluorenylmethoxy)carbonyl chloride
28920-43-6

(fluorenylmethoxy)carbonyl chloride

N,N'-bis[(9H-fluoren-9-ylmethoxy)carbonyl]-L-cystine
135273-01-7

N,N'-bis[(9H-fluoren-9-ylmethoxy)carbonyl]-L-cystine

Conditions
ConditionsYield
With sodium carbonate In 1,4-dioxane; water at 10 - 20℃; for 2h;98%
Stage #1: L-cystine With sodium hydroxide In tetrahydrofuran; water pH=10;
Stage #2: (fluorenylmethoxy)carbonyl chloride In tetrahydrofuran; water at 0℃; for 3h; pH=10;
L-cystine
56-89-3

L-cystine

nickel(II)

nickel(II)

Ni(L-cystinate) * H2O

Ni(L-cystinate) * H2O

Conditions
ConditionsYield
With sodium hydroxide In perchloric acid mixing stoich. amts. of metal (in H2O) and ligand (in 0.2 M HClO4), pH adjustment to 7-8 with NaOH (boiling, pptn.); filtration, washing (H2O, EtOH, ether); elem. anal.;97.7%
L-cystine
56-89-3

L-cystine

zinc(II) cation

zinc(II) cation

Zn(L-cystinate) * H2O

Zn(L-cystinate) * H2O

Conditions
ConditionsYield
With sodium hydroxide In perchloric acid mixing stoich. amts. of metal (in H2O) and ligand (in 0.2 M HClO4), pH adjustment to 7-8 with NaOH (room temp., pptn.); filtration, washing (H2O, EtOH, ether); elem. anal.;96%
L-cystine
56-89-3

L-cystine

copper(II) ion

copper(II) ion

Cu(L-cystinate) * 1/2 H2O

Cu(L-cystinate) * 1/2 H2O

Conditions
ConditionsYield
With sodium hydroxide In perchloric acid mixing stoich. amts. of metal (in H2O) and ligand (in 0.2 M HClO4), pH adjustment to 7-8 with NaOH (room temp., pptn.); filtration, washing (H2O, EtOH, ether); elem. anal.;95.2%
L-cystine
56-89-3

L-cystine

benzyl pyridin-2-yl carbonate
96452-48-1

benzyl pyridin-2-yl carbonate

N,N'-bis(benzyloxycarbonyl)-L-cystine
6968-11-2

N,N'-bis(benzyloxycarbonyl)-L-cystine

Conditions
ConditionsYield
With triethylamine In water; N,N-dimethyl-formamide for 1h; Ambient temperature;95%
L-cystine
56-89-3

L-cystine

Allyl chloroformate
2937-50-0

Allyl chloroformate

N,N-Bis-allyloxycarbonyl-L-cystine
80349-71-9

N,N-Bis-allyloxycarbonyl-L-cystine

Conditions
ConditionsYield
With potassium hydroxide; water; sodium carbonate at 20℃; for 48h; Acylation;95%
L-cystine
56-89-3

L-cystine

lead(2+) cation

lead(2+) cation

Pb(L-cystinate)

Pb(L-cystinate)

Conditions
ConditionsYield
With sodium hydroxide In perchloric acid mixing stoich. amts. of metal (in H2O) and ligand (in 0.2 M HClO4), pH adjustment to 7-8 with NaOH (room temp., pptn.); filtration, washing (H2O, EtOH, ether); elem. anal.;95%
With NaHCO3 In water treatment of aq. soln. of L-cystine with NaHCO3 soln., heating with Pb(II) salts at 50-60°C in water bath for about 1/2 h; cooling, crystn. at room temp., filtration, washing with cold H2O, drying over silica gel in a desiccator; elem. anal.;
L-cystine
56-89-3

L-cystine

A

L-Cysteine
52-90-4

L-Cysteine

B

L-Cysteic acid
498-40-8

L-Cysteic acid

Conditions
ConditionsYield
With hydrogenchloride; sulfuric acid; hydrogen bromide In water at 45℃; electrolysis (graphite sheets, i = 0.5 A/cm2);A 94%
B n/a
With hydrogenchloride; sulfuric acid; hydrogen bromide In water at 45℃; Product distribution; Mechanism; paired electrosynthesis (graphite sheets, i = 0.5 A/cm2);A n/a
B 94%
With hydrogenchloride at 40℃; Electrolysis;
L-cystine
56-89-3

L-cystine

copper(II) ion

copper(II) ion

Cu(L-cystinate) * H2O

Cu(L-cystinate) * H2O

Conditions
ConditionsYield
With sodium hydroxide In perchloric acid mixing stoich. amts. of metal (in H2O) and ligand (in 0.2 M HClO4), pH adjustment to 7-8 with NaOH (boiling, pptn.); filtration, washing (H2O, EtOH, ether); elem. anal.;94%
L-cystine
56-89-3

L-cystine

N-(9H-fluoren-2-ylmethoxycarbonyloxy)succinimide
82911-69-1

N-(9H-fluoren-2-ylmethoxycarbonyloxy)succinimide

N,N'-bis[(9H-fluoren-9-ylmethoxy)carbonyl]-L-cystine
135273-01-7

N,N'-bis[(9H-fluoren-9-ylmethoxy)carbonyl]-L-cystine

Conditions
ConditionsYield
With sodium carbonate In water; acetone at 50℃;94%
With sodium carbonate In tetrahydrofuran; water at 20℃; Cooling with ice;
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