N-Acetyl-D-Cysteine

About N-Acetyl-D-Cysteine

N-Acetyl-D-Cysteine is an impurity of Acetylcysteine carrying the CAS registry number 26117-28-2. With the molecular formula C5H9NO3S, it has a molar mass of 163.2 g/mol. Systematically, it is named (2S)-2-acetamido-3-sulfanylpropanoic acid. Common synonyms include D-Cysteine, N-acetyl- and (S)-2-Acetamido-3-mercaptopropanoic acid.

The product is provided as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

This Acetylcysteine impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, N-Acetyl-D-Cysteine is dispatched with a Certificate of Analysis (COA) to destinations 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	N-Acetyl-D-Cysteine
Catalogue No.	VQ-029011
CAS Number	26117-28-2
IUPAC name	(2S)-2-acetamido-3-sulfanylpropanoic acid
Molecular formula	C₅H₉NO₃S
Molecular weight	163.2 g/mol
Exact mass	163.0303
Grade	Reference Standard
HSN code	38229090
InChIKey	PWKSKIMOESPYIA-SCSAIBSYSA-N
SMILES	CC(=O)N[C@H](CS)C(=O)O
PubChem CID	94364

Physical properties
Physical form	Solid
LogP (XLogP3)	0.4
H-bond donors / acceptors	3 / 4
TPSA	67.4 Å²
Synonyms	D-Cysteine, N-acetyl-, (S)-2-Acetamido-3-mercaptopropanoic acid, (S)-N-acetyl-cysteine, Ac-D-Cys-OH, acetyl-d-cysteine, N-acetyl-d-cys, n-acetyl-d-cystein, (s)-n-acetylcysteine, (2S)-2-acetamido-3-sulanylpropanoic acid, (2S)-2-acetamido-3-sulfanyl-propanoic acid, (2S)-2-(acetylamino)-3-sulfanylpropanoic 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 N-Acetyl-D-Cysteine?

The CAS Registry Number of N-Acetyl-D-Cysteine is 26117-28-2. It is also known as D-Cysteine, N-acetyl-, (S)-2-Acetamido-3-mercaptopropanoic acid, (S)-N-acetyl-cysteine.

What is the molecular formula and molecular weight of N-Acetyl-D-Cysteine?

N-Acetyl-D-Cysteine has the molecular formula C5H9NO3S and a molecular weight of 163.2 g/mol. Its IUPAC name is (2S)-2-acetamido-3-sulfanylpropanoic acid.

What is N-Acetyl-D-Cysteine used for?

N-Acetyl-D-Cysteine 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 N-Acetyl-D-Cysteine can I order?

We supply N-Acetyl-D-Cysteine 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 N-Acetyl-D-Cysteine?

Yes. Every lot of N-Acetyl-D-Cysteine 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 N-Acetyl-D-Cysteine be shipped internationally?

Yes. We export N-Acetyl-D-Cysteine worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.