Cas no 921-01-7 (D-Cysteine)

D-Cysteine structure

Product Name:D-Cysteine

CAS No:921-01-7

MF:C₃H₇NO₂S

MW:121.158179521561

MDL:MFCD00066461

CID:40224

PubChem ID:57648407

Update Time:2025-09-26

D-Cysteine Chemical and Physical Properties

Names and Identifiers

- D-Cysteine
- D-CYS-OH
- H-D-CYS-OH
- RARECHEM AB PP 1441
- (S)-2-AMINO-3-MERCAPTOPROPIONIC ACID
- D-cysteine free base crystalline
- D-Cysteinefreebase
- (2S)-2-amino-3-sulfanyl-propanoic acid
- D-Cysteine (9CI)
- H-D-Cys-OH (D-Cysteine)
- (S)-2-Amino-3-mercaptopropanoic acid
- (2S)-2-amino-3-sulfanylpropanoic acid
- (D,L)-H-Cys-OH
- 2-amino-3-sulfopropionic acid
- Cysteine,D
- D-Amino-3-mercaptopropionic acid
- D-Cystein
- D-Zystein
- Cysteine, D-
- D-Cys
- cysteine
- D-cysteinyl radical
- (2S)-2-amino-3-mercaptopropanoic acid
- IU8WN3PPI2
- DCY
- C3H7NO2S
- (S)-Cysteine
- Epitope ID:140790
- D-Amino-3-mercaptopropionate
- GTPL4537
- Cysteine, D- (8CI)
- D
- 18: PN: CN107114752 PAGE: 2 claimed sequence
- 1f57
- CYSTEINE. (S)-
- Q16633812
- C00793
- 921-01-7
- SCHEMBL95110
- 4A30FFBA-E85B-4310-BCD5-5414B37D35D0
- CHEBI:16375
- NS00079857
- CCRIS 5542
- CHEMBL171281
- AM81647
- UNII-IU8WN3PPI2
- CS-W019341
- MFCD00066461
- NCGC00163332-01
- DTXSID60893798
- XUJNEKJLAYXESH-UWTATZPHSA-N
- Q27115094
- C-9600
- BP-20435B
- D-Cysteine, >=99% (RT)
- (S)-2-amino-3-mercaptopropanoicacid
- BDBM50109584
- HY-W018555
- EINECS 213-062-0
- DB03201
- AS-12790
- AKOS006239329
- EN300-122633
- C
- E 920
- cisteina
- 2-amino-3-sulfanylpropanoic acid
- E-920
- L-Zystein
- L-2-Amino-3-mercaptopropionic acid
- L-(+)-Cysteine hydrochloride
- Cysteine hydrochloride (anhydrous)
- Cysteine HCl (anhydrous)
- L-Cysteine
- (R)-2-amino-3-mercaptopropanoic acid
- Hcys
- L-Cys
- Cys
- 2-Amino-3-mercaptopropionic acid
- L-Cystein
- L-cysteinium chloride
- FREE CYSTEINE
- E920
- L-Cysteine monohydrochloride
- Cystein
- 2-amino-3-mercaptopropanoic acid
- (2R)-2-amino-3-mercaptopropanoic acid
- (2R)-2-amino-3-sulfanylpropanoic acid
- Cysteine monohydrochloride
- Zystein
- (R)-Cysteine hydrochloride
- MDL： MFCD00066461
- Inchi： 1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m1/s1
- InChI Key： XUJNEKJLAYXESH-UWTATZPHSA-N
- SMILES： [C@@H](N)(CS)C(=O)O
- BRN： 1721407

Computed Properties

Exact Mass: 121.02000
Monoisotopic Mass: 121.02
Isotope Atom Count: 0
Hydrogen Bond Donor Count: 3
Hydrogen Bond Acceptor Count: 4
Heavy Atom Count: 7
Rotatable Bond Count: 2
Complexity: 75.3
Covalently-Bonded Unit Count: 1
Defined Atom Stereocenter Count: 1
Undefined Atom Stereocenter Count : 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Surface Charge: 0
Tautomer Count: nothing
XLogP3: -2.5
Topological Polar Surface Area: 64.3

Experimental Properties

Color/Form: Not available
Density: 1.334
Melting Point: ~230?°C (dec.)
Boiling Point: 293.9 °C at 760 mmHg
Flash Point: 131.5 °C
Refractive Index: 1.549
Water Partition Coefficient: Soluble in water (partly).
Stability/Shelf Life: Stable. Incompatible with strong oxidizing agents.
PSA: 102.12000
LogP: 0.02840
Sensitiveness: Air Sensitive
Specific Rotation: -7.6 ±1.0° (c=5,in 5M HCl)
Optical Activity: [α]20/D ?7.6±1.0°, c =?5% in 5 M HCl
Solubility: Not available

D-Cysteine Security Information

Symbol:
Signal Word：Warning
Hazard Statement： H302
Warning Statement： P264; P270; P301+P312; P330; P501
Hazardous Material transportation number：NONH for all modes of transport
WGK Germany：3
Hazard Category Code： 22
Safety Instruction： S26; S36/37/39
FLUKA BRAND F CODES：10-23
Hazardous Material Identification：
Storage Condition：Store at room temperature
Risk Phrases：R36/37/38

D-Cysteine Customs Data

HS CODE：29309013
Customs Data：

China Customs Code:
29309013

D-Cysteine Pricemore >>

Related Categories	No.	Product Name	Cas No.	Purity	Specification	Price	update time
MedChemExpress	HY-W018555-25mg	D-Cysteine	921-01-7	≥97.0%	25mg	￥600	2022-05-18
Fluorochem	049424-5g	D-Cysteine	921-01-7	95%	5g	￡24.00	2022-03-01
Fluorochem	049424-25g	D-Cysteine	921-01-7	95%	25g	￡80.00	2022-03-01
Fluorochem	049424-100g	D-Cysteine	921-01-7	95%	100g	￡240.00	2022-03-01
HE FEI BO MEI SHENG WU KE JI YOU XIAN ZE REN GONG SI	BC6238-100g	D-Cysteine	921-01-7	≥98%	100g	￥1650元	2023-09-15
HE FEI BO MEI SHENG WU KE JI YOU XIAN ZE REN GONG SI	BC6238-25g	D-Cysteine	921-01-7	≥98%	25g	￥590元	2023-09-15
HE FEI BO MEI SHENG WU KE JI YOU XIAN ZE REN GONG SI	BC6238-5g	D-Cysteine	921-01-7	≥98%	5g	￥180元	2023-09-15
SHANG HAI TAO SHU Biotechnology Co., Ltd.	T10933-5 mg	D-Cysteine	921-01-7	97.00%	5mg	￥287.00	2022-04-26
abcr	AB282939-5 g	(S)-2-Amino-3-mercaptopropionic acid, 95% (H-D-Cys-OH); .	921-01-7	95%	5 g	€82.00	2023-07-20
abcr	AB282939-10 g	(S)-2-Amino-3-mercaptopropionic acid, 95% (H-D-Cys-OH); .	921-01-7	95%	10 g	€91.30	2023-07-20

D-Cysteine Production Method

Production Method 1

39217-38-4

921-01-7

Reaction Conditions

Reference

: Enzymatic synthesis of D-cysteine by 3-chloro-D-alanine resistant Pseudomonas putida CR 1-1

Nagasawa, Toru; Yamano, Hironori; Ohkishi, Haruyuki; Hosono, Hidekazu; Tani, Yoshiki; et al, Agricultural and Biological Chemistry, 1982, 46(12), 3003-10

Production Method 2

39217-38-4

921-01-7

Reaction Conditions

Reference

: Synthesis of D-cysteine from a racemate of 3-chloroalanine by phenylhydrazine-treated cells of Pseudomonas putida CR 1-1

Nagasawa, Toru; Hosono, Hidekazu; Yamano, Hironori; Ohkishi, Haruyuki; Tani, Yoshiki; et al, Agricultural and Biological Chemistry, 1983, 47(4), 861-8

Production Method 3

87-69-4

72777-99-2

921-01-7

Reaction Conditions

1.1 Reagents: Water ; 1.5 h, rt → reflux
1.2 Reagents: Triethylamine ; pH 5
1.3 Reagents: Ethanol ; 10 min

Reference

: New process for preparation of D-cysteine from L-cysteine by asymmetric

Yu, Mingjun; Jiang, Lijian; Wu, Liuyang; Li, Jianjun, Yingyong Huagong, 2007, 36(5), 488-490

Production Method 4

921-01-7

Reaction Conditions

1.1 Reagents: Hexadecyltrimethylammonium bromide , Ammonia , Chloroauric acid Catalysts: Cobalt chloride (CoCl2) Solvents: Water ; 25 °C; 7 h, pH 7, 70 °C

Reference

: Preparation method of chiral cobalt oxide-gold hollow nanomaterial

, China, , ,

Production Method 5

3374-22-9

921-01-7

Reaction Conditions

Reference

: Sonochemically modified ovalbumin enhances enantioenrichment of some amino acids

Mutalikdesai, Amruta; Nassir, Molhm; Saady, Abed; Hassner, Alfred; Gedanken, Aharon, Ultrasonics Sonochemistry, 2019, 58,

Production Method 6

58166-38-4

87-69-4

921-01-7

Reaction Conditions

1.1 Reagents: Water ; 1.5 h, reflux
1.2 Reagents: Ammonia Solvents: Water ; pH 3

Reference

: Method for preparing D-cysteine hydrochloride monohydrate having high optical purity

, China, , ,

Production Method 7

3374-22-9

921-01-7

Reaction Conditions

1.1 Reagents: Hydrochloric acid Catalysts: Tryptophanase Solvents: Water ; 13 h, 35 °C

Reference

: Manufacture of D-cysteine from cysteine by enzymic resolution

, China, , ,

Production Method 8

2731-73-9

921-01-7

Reaction Conditions

Reference

: Microbiological synthesis of D-cysteine and an analog

Ohkishi, Haruyuki; Nishikawa, Daikichiro; Kumagai, Hidehiko; Yamada, Hideaki, Agricultural and Biological Chemistry, 1981, 45(10), 2397-8

Production Method 9

58166-38-4

87-69-4

921-01-7

Reaction Conditions

1.1 Solvents: Water ; 1.5 h, 80 °C
1.2 Reagents: Triethylamine ; pH 5

Reference

: Study of the process for preparation of D-homocysteine from L-homocysteine hydrochloride

Zhao, Min-juan; Li, Ning-ning; Lu, Jiu-fu, Zhejiang Huagong, 2012, 43(11), 18-21

Production Method 10

45521-09-3

921-01-7

Reaction Conditions

1.1 Reagents: Hydroxyamine hydrochloride

Reference

: Optical resolution by preferential crystallization of DL-thiazolidine-4-carboxylic acid

Shiraiwa, Tadashi; Sado, Yujin; Komure, Masamitsu; Kurokawa, Hidemoto, Chemistry Letters, 1987, (4), 621-2

Production Method 11

3374-22-9

921-01-7

Reaction Conditions

1.1 Reagents: Hydrochloric acid Solvents: Water ; rt → 100 °C
1.2 Reagents: L-Dibenzoyltartaric acid ; 30 min, 80 - 100 °C; 1 h, 60 °C; 60 °C → 15 °C
1.3 Reagents: Triethylamine Solvents: Ethanol ; 1 h, 15 °C

Reference

: Chemical resolution of L-cysteine and D-cysteine

, China, , ,

Production Method 12

52-90-4

921-01-7

Reaction Conditions

1.1 Reagents: Acetic acid , Propionic acid Solvents: Acetone ; 0.5 h, 80 °C
1.2 10 h, 80 °C
1.3 Reagents: L-Phenylalanine ; 0.2 h, 80 °C
1.4 Reagents: Water ; 2 h, heated
1.5 Reagents: Sodium hydroxide Solvents: Water ; pH 4.9

Reference

: A simple method for producing D-cysteine with L-cysteine as raw material

, China, , ,

Production Method 13

72777-99-2

921-01-7

Reaction Conditions

1.1 Reagents: Water ; 3 h, 1 atm, 60 °C
1.2 Reagents: Ammonia Solvents: Water ; pH 3.5

Reference

: Process for preparation of D-cystine

, China, , ,

Production Method 14

87-69-4

72777-99-2

921-01-7

Reaction Conditions

1.1 Solvents: Water ; 1.5 h, reflux
1.2 Reagents: Triethylamine ; pH 3.6

Reference

: Process for preparation of D-cysteine hydrochloride monohydrate

, China, , ,

Production Method 15

24583-23-1

921-01-7

Reaction Conditions

1.1 Reagents: Sodium hydroxide , Phosphoric acid Solvents: Water ; rt; pH 7.2, rt → 40 °C; 44 h, pH 7.2

Reference

: Process for the enzymic preparation of enantiomerically enriched D-amino acids

, World Intellectual Property Organization, , ,

Production Method 16

87-69-4

72777-99-2

921-01-7

Reaction Conditions

Reference

: Asymmetric transformation of (RS)-cysteine via formation of (RS)-4-thiazolidinecarboxylic acids

Shiraiwa, Tadashi; Kataoka, Kazuo; Sakata, Shinji; Kurokawa, Hidemoto, Bulletin of the Chemical Society of Japan, 1989, 62(1), 109-13

Production Method 17

349-46-2

921-01-7

Reaction Conditions

Reference

: Optical resolution of (R, S)-cysteine

, Japan, , ,

Production Method 18

34592-47-7

921-01-7

Reaction Conditions

Reference

: Optically active cysteins

, Japan, , ,

Production Method 19

3981-36-0

921-01-7

Reaction Conditions

Reference

: Production of D-cysteine derivatives

, Japan, , ,

D-Cysteine Raw materials

D-Cysteine Preparation Products

D-Cysteine (921-01-7)

D-Cysteine Suppliers

Amadis Chemical Company Limited

Gold Member

Audited Supplier

(CAS:921-01-7)D-Cysteine

Order Number:A844146

Stock Status:in Stock

Quantity:500g

Purity:99%

Pricing Information Last Updated:Friday, 30 August 2024 07:02

Price ($):400.0

Email:[email protected]

Product Official Link

Suzhou Senfeida Chemical Co., Ltd

Gold Member

Audited Supplier

(CAS:921-01-7)D-Cysteine

Order Number:sfd10086

Stock Status:in Stock

Quantity:200kg

Purity:99.9%

Pricing Information Last Updated:Friday, 19 July 2024 14:35

Price ($):discuss personally

Email:[email protected]

Product Official Link

D-Cysteine Related Literature

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Huabin Zhang,Shaowu Du CrystEngComm, 2014,16, 4059-4068
3. An artificial enzyme cascade amplification strategy for highly sensitive and specific detection of breast cancer-derived exosomes?

Huiying Xu,Lu Zheng,Yu Zhou,Bang-Ce Ye Analyst, 2021,146, 5542-5549
4. Alumina grafted SBA-15 sustainable bifunctional catalysts for direct cross-coupling of benzylic alcohols to diarylmethanes?

Chandran Rajendran,Govindaswamy Satishkumar,Charlotte Lang,Eric M. Gaigneaux Catal. Sci. Technol., 2020,10, 2583-2592
5. An integrated cathode and solid electrolyte via in situ polymerization with significantly reduced interface resistance?

Jialiang Yuan,Ran Dong,Yuan Li,Yang Liu,Zhuo Zheng,Yuxia Liu,Yan Sun,Benhe Zhong,Zhenguo Wu,Xiaodong Guo Chem. Commun., 2021,57, 13004-13007

Related Categories

921-01-7 (D-Cysteine) Related Products

Recommended suppliers

Amadis Chemical Company Limited

(CAS:921-01-7)D-Cysteine

Purity:99%

Quantity:500g

Price ($):400.0

Suzhou Senfeida Chemical Co., Ltd

(CAS:921-01-7)D-Cysteine

Purity:99.9%

Quantity:200kg

Price ($):Inquiry

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Cas no 921-01-7 (D-Cysteine)

D-Cysteine Chemical and Physical Properties

Names and Identifiers

Computed Properties

Experimental Properties

D-Cysteine Security Information

D-Cysteine Customs Data

China Customs Code:

D-Cysteine Pricemore >>

D-Cysteine Production Method

Production Method 1

Production Method 2

Production Method 3

Production Method 4

Production Method 5

Production Method 6

Production Method 7

Production Method 8

Production Method 9

Production Method 10

Production Method 11

Production Method 12

Production Method 13

Production Method 14

Production Method 15

Production Method 16

Production Method 17

Production Method 18

Production Method 19

D-Cysteine Raw materials

D-Cysteine Preparation Products

D-Cysteine Suppliers

D-Cysteine Related Literature

Related Categories

921-01-7 (D-Cysteine) Related Products