L-Cysteic Acid

Name: L-Cysteic Acid
Brand: Vaqora Chemicals
SKU: VQ-034927

About L-Cysteic Acid

Listed under CAS 498-40-8, L-Cysteic Acid is an impurity of Acetylcysteine available from Vaqora Chemicals. Its molecular formula is C3H7NO5S and its molecular weight is 169.16 g/mol. Systematically, it is named (2R)-2-amino-3-sulfopropanoic acid. It is also known as (R)-2-Amino-3-sulfopropanoic Acid or Cysteinesulfonic acid.

It is supplied as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Handle it with standard laboratory precautions and appropriate personal protective equipment.

As a characterised impurity of Acetylcysteine, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Acetylcysteine

View every impurity, metabolite and intermediate we list for Acetylcysteine.

Acetylcysteine impurities

Specifications & identifiers

Chemical identifiers
Product name	L-Cysteic Acid
Catalogue No.	VQ-034927
CAS Number	498-40-8
IUPAC name	(2R)-2-amino-3-sulfopropanoic acid
Molecular formula	C₃H₇NO₅S
Molecular weight	169.16 g/mol
Exact mass	169.0045
Grade	Reference Standard
HSN code	38229090
InChIKey	XVOYSCVBGLVSOL-REOHCLBHSA-N
SMILES	C([C@@H](C(=O)O)N)S(=O)(=O)O
PubChem CID	72886

Physical properties
Physical form	Solid
LogP (XLogP3)	-4.5
H-bond donors / acceptors	3 / 6
TPSA	126 Å²
Synonyms	(R)-2-Amino-3-sulfopropanoic Acid, Cysteinesulfonic acid, 3-sulfo-L-alanine, Cysteic acid, L-, L-Alanine, 3-sulfo-, Cysteic acid (VAN), sulfo-D-alanine, Cysteric acid, Cipteic acid, Alanine, 3-sulfo-, L-, Cysteinic acid, Cepteic acid

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 L-Cysteic Acid?

The CAS Registry Number of L-Cysteic Acid is 498-40-8. It is also known as (R)-2-Amino-3-sulfopropanoic Acid, Cysteinesulfonic acid, 3-sulfo-L-alanine.

What is the molecular formula and molecular weight of L-Cysteic Acid?

L-Cysteic Acid has the molecular formula C3H7NO5S and a molecular weight of 169.16 g/mol. Its IUPAC name is (2R)-2-amino-3-sulfopropanoic acid.

What is L-Cysteic Acid used for?

L-Cysteic Acid is supplied as a characterised reference material related to Acetylcysteine. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of L-Cysteic Acid can I order?

We supply L-Cysteic Acid in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with L-Cysteic Acid?

Yes. Every lot of L-Cysteic Acid 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 L-Cysteic Acid be shipped internationally?

Yes. We export L-Cysteic Acid worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.