ChemicalBook > CAS DataBase List > D-Cysteine

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
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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)
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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
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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.

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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
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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

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D-Cysteine Suppliers

Canada 1 China 300 Europe 3 Germany 4 India 5 Switzerland 3 United Kingdom 7 United States 27 Global 350
Triveni chemicals
Tel
--
Fax
--
Email
sales@trivenichemical.com
Country
India
ProdList
6088
Advantage
58
Sisco Research Laboratories Pvt. Ltd.
Tel
--
Fax
--
Email
marketing@srlchem.com
Country
India
ProdList
4315
Advantage
58
A.J Chemicals
Tel
--
Fax
--
Email
sales@ajchem.in
Country
India
ProdList
6100
Advantage
58
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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