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
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
Cas:56-89-3
Min.Order:1 Metric Ton
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Type:Trading Company
inquiry1.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
Cas:56-89-3
Min.Order:1 Kilogram
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Type:Other
inquiryWelcome 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
Cas:56-89-3
Min.Order:1 Kilogram
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Type:Manufacturers
inquiryItems Standard Result Appearance White or off-white crystalline powder Conform Assay 98.5 %
Cas:56-89-3
Min.Order:1 Gram
FOB Price: $100.0 / 500.0
Type:Trading Company
inquiryProduct 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
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
Cas:56-89-3
Min.Order:25 Kilogram
Negotiable
Type:Trading Company
inquiryHebei 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 、
Cas:56-89-3
Min.Order:1 Kilogram
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Type:Manufacturers
inquiryL-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
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
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
Cas:56-89-3
Min.Order:1 Gram
FOB Price: $0.1
Type:Manufacturers
inquiryADVANTAGE: 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,
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
Cas:56-89-3
Min.Order:1 Kilogram
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Type:Other
inquiryColorcom 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
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
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
Cas:56-89-3
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryWITH 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
Cas:56-89-3
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
inquiryOur 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
Product name L-Cystine Specification 99% Test Method HPLC Particle Size 98% pass 80 mesh Appearance: white powder Storage:Store i
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
Cas:56-89-3
Min.Order:1 Gram
Negotiable
Type:Trading Company
inquiryAppearance:White crystalline powder Storage:Room temperature Package:25kg/drum Application:Amino acid Transportation:Express/Sea/Air Port:Any port in china
Cas:56-89-3
Min.Order:25 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryOur 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
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
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
Cas:56-89-3
Min.Order:1 Kilogram
FOB Price: $1.0
Type:Lab/Research institutions
inquiryWe 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
Cas:56-89-3
Min.Order:10 Gram
FOB Price: $3.5
Type:Trading Company
inquiryOur 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
Cas:56-89-3
Min.Order:1 Kilogram
FOB Price: $24.0 / 30.0
Type:Trading Company
inquiryL-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
Cas:56-89-3
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryHello, 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
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
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
Cas:56-89-3
Min.Order:1 Kilogram
FOB Price: $20.0 / 40.0
Type:Trading Company
inquiryConditions | Yield |
---|---|
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
(R)-2-Amino-3-(4-methoxy-phenylmethanesulfinyl)-propionic acid
L-cystine
Conditions | Yield |
---|---|
With dimethylsulfide; trifluorormethanesulfonic acid In trifluoroacetic acid at 0℃; for 1h; | 100% |
(R)-9H-fluorenyl-9-methyl-L-cysteine
L-cystine
Conditions | Yield |
---|---|
With piperidine In N,N-dimethyl-formamide for 2h; | 100% |
Conditions | Yield |
---|---|
With copper(II) ion In water at 25℃; Rate constant; var. conc. of Cu2+; | A 100% B n/a |
Conditions | Yield |
---|---|
With Methyltrichlorosilane; 1,1'-sulfinylbisbenzene at 4℃; for 0.166667h; | 99% |
Conditions | Yield |
---|---|
With dimethylsulfide In trifluoroacetic acid at 0℃; for 1h; | 97.9% |
L-cystine
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
In methanol; aq. phosphate buffer at 20℃; pH=7.4; | A 95% B 96% C 80% |
Conditions | Yield |
---|---|
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
L-cystine
Conditions | Yield |
---|---|
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
H-Cys(Ad)-OH
L-cystine
Conditions | Yield |
---|---|
With dimethylsulfide; trifluorormethanesulfonic acid In trifluoroacetic acid at 0℃; for 1h; | 92.4% |
S-(4-methoxybenzyl)-L-cysteine
(R)-2-Amino-3-(4-methoxy-phenylmethanesulfinyl)-propionic acid
L-cystine
Conditions | Yield |
---|---|
With dimethylsulfide; trifluorormethanesulfonic acid In trifluoroacetic acid at 0℃; for 1h; | 92.2% |
S-(diphenyl-4-pyridylmethyl)-L-cysteine
L-cystine
Conditions | Yield |
---|---|
In hydrogenchloride; acetic acid at 0℃; for 0.75h; electrolysis (mercury cathode, 250 mA); | 91% |
S-benzyloxymethylcysteine
L-cystine
Conditions | Yield |
---|---|
With methoxybenzene; thallium(III) trifluoroacetate In trifluoroacetic acid | 88.8% |
With methoxybenzene; thallium(III) trifluoroacetate In trifluoroacetic acid Product distribution; other reagent; | 88.8% |
S-Trimethylacetamidomethyl-L-cysteine (H-Cys(Tacm)OH)
L-cystine
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
With dimethylsulfide; trimethylsilyl trifluoromethanesulfonate In trifluoroacetic acid at 0℃; for 1h; | 86.3% |
Conditions | Yield |
---|---|
With dimethylsulfide In trifluoroacetic acid at 25℃; for 1h; | 85.3% |
N-t-butoxycarbonyl-S-acetamidomethyl-L-cysteine
A
L-cystine
B
S-acetamidomethyl-L-cysteine
Conditions | Yield |
---|---|
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
L-cystine
Conditions | Yield |
---|---|
With Methyltrichlorosilane; 1,1'-sulfinylbisbenzene at 4℃; for 0.5h; | 76% |
S-<(4-methylphenyl)methyl>-L-cysteine
L-cystine
Conditions | Yield |
---|---|
With Methyltrichlorosilane; 1,1'-sulfinylbisbenzene at 4℃; for 0.166667h; | 49% |
With dimethyl sulfoxide; methoxybenzene; trifluoroacetic acid Ambient temperature; |
(+)-D-glucosamine hydrochloride
A
L-cystine
B
2-(D-arabino-1',2',3',4'-tetrahydroxybutyl)-5-(D-erythro-2",3",4"-trihydroxybutyl)piperazine
Conditions | Yield |
---|---|
With pyridine; l-cysteine hydrochloride In methanol; water for 32h; Heating; | A n/a B 45% |
Boc-Cys(Acm)(O)-OH
phenol
A
L-cystine
B
S-(4-hydroxyphenyl)-L-cysteine
Conditions | Yield |
---|---|
With hydrogenchloride at 110℃; for 24h; | A 16% B 41% |
H-Cys(Acm)(O)-OH
A
L-Cysteine
B
L-Cysteic acid
C
L-cystine
D
S-acetamidomethyl-L-cysteine
Conditions | Yield |
---|---|
With ammonia; sodium for 0.00277778h; Product distribution; | A n/a B 19% C 10% D 21% |
Conditions | Yield |
---|---|
With dimethylsulfide; trifluorormethanesulfonic acid In trifluoroacetic acid at 0℃; for 1h; | 20.8% |
Conditions | Yield |
---|---|
With dimethylsulfide; trifluorormethanesulfonic acid In trifluoroacetic acid at 0℃; for 1h; | 15.5% |
Conditions | Yield |
---|---|
With dimethylsulfide; trifluorormethanesulfonic acid In trifluoroacetic acid at 0℃; for 1h; | 10.5% |
Conditions | Yield |
---|---|
im Organismus der Ratte; |
L-cystine
methyl chloroformate
(R,R)-N,N'-dimethoxycarbonyl-3,3'-dithiobis(2-aminopropionic acid)
Conditions | Yield |
---|---|
With sodium hydroxide; sodium carbonate at 20℃; for 2h; pH=8 - 9; | 100% |
With sodium carbonate In tetrahydrofuran; water at 20℃; for 16h; | 65% |
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
In benzene at 90℃; for 16h; | 100% |
In benzene for 12h; Esterification; Heating; | 95% |
Conditions | Yield |
---|---|
With chloro-trimethyl-silane | 100% |
With thionyl chloride at 25℃; for 24h; Schlenk technique; Inert atmosphere; | 99% |
With thionyl chloride for 20h; Reflux; | 98% |
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
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; |
Conditions | Yield |
---|---|
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
chloroformic acid ethyl ester
(R,R)-N,N'-diethoxycarbonyl-3,3'-dithiobis(2-aminopropionic acid)
Conditions | Yield |
---|---|
With sodium hydroxide; sodium carbonate at 20℃; for 1.5h; pH=8 - 9; | 98% |
With sodium hydroxide | 98% |
L-cystine
(fluorenylmethoxy)carbonyl chloride
N,N'-bis[(9H-fluoren-9-ylmethoxy)carbonyl]-L-cystine
Conditions | Yield |
---|---|
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; |
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
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
benzyl pyridin-2-yl carbonate
N,N'-bis(benzyloxycarbonyl)-L-cystine
Conditions | Yield |
---|---|
With triethylamine In water; N,N-dimethyl-formamide for 1h; Ambient temperature; | 95% |
Conditions | Yield |
---|---|
With potassium hydroxide; water; sodium carbonate at 20℃; for 48h; Acylation; | 95% |
Conditions | Yield |
---|---|
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.; |
Conditions | Yield |
---|---|
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; |
Conditions | Yield |
---|---|
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
N-(9H-fluoren-2-ylmethoxycarbonyloxy)succinimide
N,N'-bis[(9H-fluoren-9-ylmethoxy)carbonyl]-L-cystine
Conditions | Yield |
---|---|
With sodium carbonate In water; acetone at 50℃; | 94% |
With sodium carbonate In tetrahydrofuran; water at 20℃; Cooling with ice; |
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