D-Cysteine, 99%

Name: D-Cysteine, 99%
Brand: Vaqora Chemicals
SKU: VQ-002083

About D-Cysteine, 99%

Vaqora Chemicals supplies D-Cysteine, an amino acid derivative registered under CAS number 921-01-7 with a typical assay of 99%. Its molecular formula is C3H7NO2S and its molecular weight is 121.16 g/mol. Systematically, it is named (2S)-2-amino-3-sulfanylpropanoic acid. It is also known as (S)-2-Amino-3-mercaptopropionic acid or Cysteine, D-.

It is supplied as a white powder or crystals or crystalline powder. Reported physical data include a melting point of ~230 °C (dec.). Store sealed in a dry, well-ventilated location away from incompatible materials. It carries the GHS signal word “Warning” with 1 hazard statement. Review the Safety Data Sheet before use.

Typical applications include peptide synthesis, cell culture media, biochemical research and catalysis. Buyers come mainly from academic and industrial research and diagnostics and biotechnology.

Standard pack sizes are 100 mg, 1 g and 5 g, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Peptide synthesis
Cell culture media
Biochemical research
Catalysis

Industries

Specifications & identifiers

Chemical identifiers
Product name	D-Cysteine, 99%
Catalogue No.	VQ-002083
CAS Number	921-01-7
IUPAC name	(2S)-2-amino-3-sulfanylpropanoic acid
Molecular formula	C₃H₇NO₂S
Molecular weight	121.16 g/mol
Exact mass	121.0197
Purity / assay	99%
HSN code	29181690
InChIKey	XUJNEKJLAYXESH-UWTATZPHSA-N
SMILES	C([C@H](C(=O)O)N)S
PubChem CID	92851

Physical properties
Physical form	Crystalline
Appearance	White powder or crystals or crystalline powder
Melting point	~230 °C (dec.)
LogP (XLogP3)	-2.5
H-bond donors / acceptors	3 / 4
TPSA	64.3 Å²
Synonyms	(S)-2-Amino-3-mercaptopropionic acid, Cysteine, D-, (S)-2-amino-3-mercaptopropanoic acid, D-Cystein, (S)-Cysteine, D-Zystein, D-Amino-3-mercaptopropionic acid, (2S)-2-amino-3-mercaptopropanoic acid, (2S)-2-azaniumyl-3-sulfanylpropanoate, D-Cys, (S)-2-amino-3-mercaptopropanoicacid, D-Amino-3-mercaptopropionate

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements: P264, P270, P301 + P317, P330, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of D-Cysteine, 99%?

The CAS Registry Number of D-Cysteine, 99% is 921-01-7. It is also known as (S)-2-Amino-3-mercaptopropionic acid, Cysteine, D-, (S)-2-amino-3-mercaptopropanoic acid.

What is the molecular formula and molecular weight of D-Cysteine, 99%?

D-Cysteine, 99% has the molecular formula C3H7NO2S and a molecular weight of 121.16 g/mol. Its IUPAC name is (2S)-2-amino-3-sulfanylpropanoic acid.

Which grade and pack sizes of D-Cysteine, 99% can I order?

We supply D-Cysteine, 99% in (99%) grade, in 100 mg, 1 g, 5 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with D-Cysteine, 99%?

Yes. Every lot of D-Cysteine, 99% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can D-Cysteine, 99% be shipped internationally?

Yes. D-Cysteine, 99% is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.