N-Acetyl-S-Phenyl-L-Cysteine

Name: N-Acetyl-S-Phenyl-L-Cysteine
Brand: Zemixal
SKU: ZX-034231

Reference StandardAvailable on request

Order N-Acetyl-S-Phenyl-L-Cysteine (CAS 4775-80-8) online at Zemixal: C11H13NO3S, COA and SDS with every lot, worldwide shipping.

Pack sizes

N-Acetyl-S-Phenyl-L-Cysteine chemical structure

CAS number4775-80-8

FormulaC₁₁H₁₃NO₃S

Molar mass239.29 g/mol

Physical formSolid

HS code38229090

InChIKeyCICOZWHZVMOPJS-JTQLQIEISA-N

IUPAC name(2R)-2-acetamido-3-phenylsulfanylpropanoic acid

About N-Acetyl-S-Phenyl-L-Cysteine

N-Acetyl-S-Phenyl-L-Cysteine is supplied by Zemixal as a characterised reference material for Cysteine analysis. For your records (Reference Standard), the material is defined by CAS 4775-80-8, formula C11H13NO3S and molar mass 239.29 g/mol. It is handled as a solid.

Use cases we see most often

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

Handling and storage

Hazard communication follows GHS (Warning: H315, H319 and H335). Our SDS lists exposure controls and first-aid measures.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. You receive a certificate of analysis with characterisation data with each order. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Cysteine

See every impurity, metabolite and related compound we list for this API.

Cysteine standards

Typical uses

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

Applications

Pharmaceutical Manufacturing and QC Research Labs and Universities

Specifications and identifiers

Specifications of N-Acetyl-S-Phenyl-L-Cysteine
Product name	N-Acetyl-S-Phenyl-L-Cysteine
Catalogue number	ZX-034231
CAS number	4775-80-8
IUPAC name	(2R)-2-acetamido-3-phenylsulfanylpropanoic acid
Molecular formula	C₁₁H₁₃NO₃S
Molar mass	239.29 g/mol
Exact mass	239.0616
Grade	Reference Standard
Physical form	Solid
XLogP3	1.4
H-bond donors / acceptors	2 / 4
Topological polar surface area	91.7 Å²
HS code	38229090
InChIKey	CICOZWHZVMOPJS-JTQLQIEISA-N
SMILES	CC(=O)N[C@@H](CSC1=CC=CC=C1)C(=O)O
PubChem CID	2723735
Synonyms	S-Phenylmercapturic acid, Phenylmercapturic acid, S-Phenyl-N-acetylcysteine, L-Cysteine, N-acetyl-S-phenyl-, 2-Acetamido-3-phenylthiopropanoic acid, (2S)-2-acetamido-3-phenylsulfanyl-propanoic acid, (2R)-2-acetamido-3-(phenylsulfanyl)propanoic acid, S-PMA, (R)-2-Acetamido-3-(phenylthio)propanoic acid, (2R)-2-acetamido-3-phenylsulfanyl-propanoic acid

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

Irritant or harmful

Signal word Warning

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of N-Acetyl-S-Phenyl-L-Cysteine
10 mg	Quoted on request
25 mg	Quoted on request
50 mg	Quoted on request
100 mg	Quoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about N-Acetyl-S-Phenyl-L-Cysteine

Which CAS number identifies N-Acetyl-S-Phenyl-L-Cysteine?

N-Acetyl-S-Phenyl-L-Cysteine is registered under CAS 4775-80-8. You may also see it listed as S-Phenylmercapturic acid, Phenylmercapturic acid, S-Phenyl-N-acetylcysteine. Our catalogue number for this item is ZX-034231.

What are the formula and molar mass of N-Acetyl-S-Phenyl-L-Cysteine?

For N-Acetyl-S-Phenyl-L-Cysteine, its formula is C11H13NO3S and its molar mass is 239.29 g/mol. The systematic (IUPAC) name is (2R)-2-acetamido-3-phenylsulfanylpropanoic acid. InChIKey CICOZWHZVMOPJS-JTQLQIEISA-N lets you match it in any structure database.

How is N-Acetyl-S-Phenyl-L-Cysteine used in pharmaceutical QC?

N-Acetyl-S-Phenyl-L-Cysteine is a characterised reference material linked to Cysteine. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.

What grade and pack sizes are available for N-Acetyl-S-Phenyl-L-Cysteine?

This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.

Which documents come with N-Acetyl-S-Phenyl-L-Cysteine?

Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.

Can Zemixal ship N-Acetyl-S-Phenyl-L-Cysteine to my country?

Yes. Because N-Acetyl-S-Phenyl-L-Cysteine is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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