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Pharmacopeial Impurities (EP / USP / BP)

Cefalexin EP Impurity A

Reference StandardIn stock

Buy Cefalexin EP Impurity A (CAS 875-74-1) from Zemixal. Request a quote with price, lead time and documents. Quotes within one business day.

Pack sizes
Cefalexin EP Impurity A chemical structure
CAS number875-74-1
FormulaC8H9NO2
Molar mass151.16 g/mol
Physical formSolid
HS code38229090
InChIKeyZGUNAGUHMKGQNY-SSDOTTSWSA-N
IUPAC name(2R)-2-amino-2-phenylacetic acid

About Cefalexin EP Impurity A

Cefalexin EP Impurity A belongs to the Cefalexin reference-standard family in the Zemixal catalogue. Identity at a glance (Reference Standard): CAS 875-74-1, formula C8H9NO2 and molar mass 151.16 g/mol. It is handled as a solid.

Use cases we see most often

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Handling and storage

Classified under GHS with signal word Warning and hazard statements H315, H319 and H335. Read the SDS before first use.

Standard pack sizes are 10 mg, 25 mg, 50 mg, 100 mg and 250 mg, and custom quantities are quoted on request. Every shipment includes a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Cefalexin

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

Cefalexin standards

Typical uses

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Cefalexin EP Impurity A
Product nameCefalexin EP Impurity A
Catalogue numberZX-005622
CAS number875-74-1
IUPAC name(2R)-2-amino-2-phenylacetic acid
Molecular formulaC8H9NO2
Molar mass151.16 g/mol
Exact mass151.0633
GradeReference Standard
Physical formSolid
XLogP3-1.7
H-bond donors / acceptors2 / 3
Topological polar surface area63.3 Ų
HS code38229090
InChIKeyZGUNAGUHMKGQNY-SSDOTTSWSA-N
SMILESC1=CC=C(C=C1)[C@H](C(=O)O)N
PubChem CID70134
SynonymsD-(-)-alpha-Phenylglycine, (αR)-α-Aminobenzeneacetic acid, D-(-)-2-Phenylglycine, (-)-(R)-Phenylglycine, (-)-Phenylglycine, (2R)-Amino-2-phenylethanoic Acid, (R)-(-)-2-Phenylglycine, (R)-2-Amino-2-phenylacetic Acid, (R)-2-Amino-2-phenylethanoic Acid, (R)-2-Phenyl-2-aminoethanoic Acid, (R)-2-Phenylglycine, (R)-Phenylglycine

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

Safety and GHS hazards

GHS07 Irritant or harmful
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 Cefalexin EP Impurity A
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request
250 mgQuoted on request

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

Questions about Cefalexin EP Impurity A

Which CAS number identifies Cefalexin EP Impurity A?
Cefalexin EP Impurity A is registered under CAS 875-74-1. You may also see it listed as D-(-)-alpha-Phenylglycine, (αR)-α-Aminobenzeneacetic acid, D-(-)-2-Phenylglycine. Our catalogue number for this item is ZX-005622.
What are the formula and molar mass of Cefalexin EP Impurity A?
For Cefalexin EP Impurity A, its formula is C8H9NO2 and its molar mass is 151.16 g/mol. The systematic (IUPAC) name is (2R)-2-amino-2-phenylacetic acid. InChIKey ZGUNAGUHMKGQNY-SSDOTTSWSA-N lets you match it in any structure database.
How is Cefalexin EP Impurity A used in pharmaceutical QC?
Cefalexin EP Impurity A is a characterised reference material linked to Cefalexin. 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 Cefalexin EP Impurity A?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg, 250 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Cefalexin EP Impurity A?
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 Cefalexin EP Impurity A to my country?
Yes. Because Cefalexin EP Impurity A 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.

Other grades with CAS 875-74-1

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