D-Cysteine

Product Name: D-Cysteine
CAS No.: 921-01-7
Chemical Name: D-Cysteine
Synonyms: H-D-CYS-OH;D-CYS-OH;D-CYSTEINE;D-Cysteine,99%;D-Cysteine (9CI);D-Cysteinefreebase;RARECHEM AB PP 1441;D-Cysteine;BETA-MERCAPTOALANINE;D-Cysteine, 98%, 98%
CBNumber: CB4407452
Molecular Formula: C3H7NO2S
Formula Weight: 121.16
MOL File: 921-01-7.mol

More

Less

D-Cysteine Property

Melting point:: ~230 °C (dec.)
Boiling point:: 293.9±35.0 °C(Predicted)
Density: 1.334±0.06 g/cm3(Predicted)
storage temp.: Keep in dark place,Inert atmosphere,2-8°C
solubility: Aqueous Acid (Slightly), Water (Slightly)
pka: 2.07±0.10(Predicted)
form: Crystalline Powder
color: White
optical activity: [α]20/D 7.6±1.0°, c = 5% in 5 M HCl
Water Solubility: Soluble in water (partly).
Sensitive: Air Sensitive
BRN: 1721407
Stability:: Stable. Incompatible with strong oxidizing agents.
LogP: 0.230 (est)
CAS DataBase Reference: 921-01-7(CAS DataBase Reference)

More

Less

Safety

Hazard Codes: Xi,Xn
Risk Statements: 36/37/38-20/21/22-22
Safety Statements: 26-36-37/39-22
WGK Germany: 3
F: 10-23
HS Code: 29309013

More

Less

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P330Rinse mouth.

More

Less

N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 30095
Product name: D-Cysteine
Purity: ≥99% (RT)
Packaging: 100mg
Price: $82.9
Updated: 2025/07/31

Sigma-Aldrich

Product number: 30095
Product name: D-Cysteine
Purity: ≥99% (RT)
Packaging: 1g
Price: $220
Updated: 2025/07/31

TCI Chemical

Product number: C1916
Product name: D-Cysteine
Packaging: 5G
Price: $67
Updated: 2025/07/31

TCI Chemical

Product number: C1916
Product name: D-Cysteine
Packaging: 25G
Price: $201
Updated: 2025/07/31

Usbiological

Product number: 268971
Product name: D-Cysteine
Packaging: 25g
Price: $333
Updated: 2021/12/16

More

Less

D-Cysteine Chemical Properties,Usage,Production

Chemical Properties

White crystalline powder

Uses

D-Cysteine has been used in the functionalization of QDs for applications in photocatalysis.
It can also be used in the synthesis of:

cysteine-based chiral carbon dots (CDs)
D-luciferin and aminoluciferin analogs

Definition

ChEBI: An optically active form of cysteine having D-configuration.

reaction suitability

reaction type: solution phase peptide synthesis

Purification Methods

Purify it by recrystallisation from H2O (free from metal ions) and dry it in a vacuum. It is soluble in H2O, EtOH, Me2CO, EtOAc, AcOH, *C6H6 and CS2. Acidic solutions can be stored under N2 for a few days without deterioration. [For synthesis and spectra see Greenstein & Winitz Chemistry of the Amino Acids (J. Wiley) Vol 3 p1879 1961, Beilstein 4 III 1618, 4 IV 3144.]

D-Cysteine Preparation Products And Raw materials

Raw materials

Preparation Products

More

Less

D-Cysteine Suppliers

Canada 1 China 300 Europe 3 Germany 4 India 5 Switzerland 3 United Kingdom 7 United States 27 Global 350

BOC Sciences

Tel: 16314854226; +16314854226
Email: inquiry@bocsci.com
Country: United States
ProdList: 19654
Advantage: 58

TargetMol Chemicals Inc.

Tel: +1-781-999-5354; +17819995354
Email: marketing@targetmol.com
Country: United States
ProdList: 32435
Advantage: 58

Accela ChemBio Inc.

Tel: +1-858-6993322
Fax: (+1)-858-876-1948
Email: info@accelachem.com
Country: United States
ProdList: 21193
Advantage: 58

Cato Research Chemicals Inc.

Tel: +86-020-81960175-877 4000-868-328
Email: tianwen.zhan@cato-chem.com
Country: United States
ProdList: 10404
Advantage: 58

Alchem Pharmtech,Inc.

Tel: 8485655694
Email: sales@alchempharmtech.com
Country: United States
ProdList: 63687
Advantage: 58

TargetMol Chemicals Inc.

Tel: +1-781-999-5354;
Email: support@targetmol.com
Country: United States
ProdList: 39035
Advantage: 58

Aladdin Scientific

Tel
Email: tp@aladdinsci.com
Country: United States
ProdList: 57505
Advantage: 58

United States Biological

Tel: --
Fax: --
Email: sales@advtechind.com
Country: United States
ProdList: 6075
Advantage: 58

Abblis Chemicals LLC

Tel: --
Fax: --
Email: info@abblis.com
Country: United States
ProdList: 1272
Advantage: 0

MedChemExpress

Tel: --
Fax: --
Email: sales@medchemexpress.com
Country: United States
ProdList: 6398
Advantage: 58

Combi-Blocks Inc.

Tel: --
Fax: --
Email: sales@combi-blocks.com
Country: United States
ProdList: 6618
Advantage: 69

Riedel-de Haen AG

Tel: --
Fax: --
Country: United States
ProdList: 6773
Advantage: 87

Frontier Scientific, Inc.

Tel: --
Fax: --
Email: sales@frontiersci.com
Country: United States
ProdList: 6222
Advantage: 86

Alfa Chemistry

Tel: --
Fax: --
Email: info@Alfa-Chemistry.com
Country: United States
ProdList: 6814
Advantage: 0

Rintech, Inc.

Tel: --
Fax: --
Email: info@rintechinc.com
Country: United States
ProdList: 3416
Advantage: 60

3B Scientific Corporation

Tel: --
Fax: --
Email: sales@3bsc.com
Country: United States
ProdList: 6962
Advantage: 56

NetQem

Tel: --
Fax: --
Email: sales@netqem.us
Country: United States
ProdList: 1641
Advantage: 38

AstaTech, Inc

Tel: --
Fax: --
Email: sales@astatechinc.com
Country: United States
ProdList: 6371
Advantage: 58

Chem-Impex International, Inc.

Tel: --
Fax: --
Country: United States
ProdList: 6730
Advantage: 64

Waterstone Technology, LLC

Tel: --
Fax: --
Email: sales@waterstonetech.com
Country: United States
ProdList: 6786
Advantage: 30

HONEST JOY HOLDINGS LIMITED

Tel: --
Fax: --
Email: sales@honestjoy.cn
Country: United States
ProdList: 6675
Advantage: 54

Advance Scientific & Chemical

Tel: --
Fax: --
Email: sales@advance-scientific.com
Country: United States
ProdList: 6419
Advantage: 71

3B Scientific Corporation

Tel: --
Fax: --
Email: sales@3bsc.com
Country: United States
ProdList: 6718
Advantage: 47

AK Scientific, Inc.

Tel: --
Fax: --
Email: sales@aksci.com
Country: United States
ProdList: 6347
Advantage: 65

Spectrum Chemicals & Laboratory Products

Tel: --
Fax: --
Email: sales@spectrumchemical.com
Country: United States
ProdList: 6699
Advantage: 77

Beta Pharma, Inc.

Tel: --
Fax: --
Email: sales@betapharma.com
Country: United States
ProdList: 6226
Advantage: 60

BOSCHE SCIENTIFIC, LLC

Tel: --
Fax: --
Email: Sales@BoscheSci.com
Country: United States
ProdList: 6477
Advantage: 55

More

Less

View Lastest Price from D-Cysteine manufacturers

R&D Scientific Inc.

Product: D-Cysteine 921-01-7
Price: US $850.00/g
Min. Order: 1g
Purity: 99 %
Supply Ability: 5000 Kg
Release date: 2025-06-01

WUHAN FORTUNA CHEMICAL CO., LTD

Product: D-Cysteine 921-01-7
Price: US $0.00/Kg/Bag
Min. Order: 100g
Purity: 99.0%min BR
Supply Ability: 10000G
Release date: 2021-08-23

Hebei Fengjia New Material Co., Ltd

Product: D-Cysteine 921-01-7
Price: US $30.00/kg
Min. Order: 1kg
Purity: 0.99
Supply Ability: 100 tons
Release date: 2024-08-13

921-01-7, D-CysteineRelated Search:

β-Alanine D-Cysteine hydrochloride 3-Mercaptopropionic acid N-Acetyl-L-cysteine Mercaptoacetic acid Methyl 3-mercaptopropionate Glycine ISOOCTYL 3-MERCAPTOPROPIONATE 2-Ethylhexyl mercaptoacetate 2-Mercaptopropionic acid Sodium thioglycolate Calcium thioglycolate 6-Mercaptopurine DL-Homocysteine 2-Mercaptoethanol L-CYSTEINE HCL ANHYDROUS CYSTEINE D-Luciferin

D-Cysteine >=99% (RT)

D-Cysteine, 98%, 98%

H-D-CYS-OH

D-CYS-OH

D-CYSTEINE

BETA-MERCAPTOALANINE

(S)-2-AMINO-3-MERCAPTOPROPIONIC ACID

RARECHEM AB PP 1441

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

D-Cysteine,99%

(2S)-2-amino-3-mercapto-propionic acid

(2S)-2-azanyl-3-sulfanyl-propanoic acid

D-Cysteine,(S)-2-Amino-3-mercaptopropionic acid

D-Cysteine USP/EP/BP

D-Cysteine (base) extrapure, 99%

Prinomastat Impurity 6

<sc>D</sc>-Cysteine

921-01-7

Amino Acid Derivatives

Cysteine/Cystine

Specialty Synthesis

Peptide Synthesis

Amino Acids