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Pharmacopeial Impurities (EP / USP / BP)

Amoxicillin EP Impurity B

Reference StandardAvailable on request

Order Amoxicillin EP Impurity B (CAS 26889-93-0) online at Zemixal. Request a quote with price, lead time and documents.

Pack sizes
Amoxicillin EP Impurity B chemical structure
CAS number26889-93-0
FormulaC16H19N3O5S
Molar mass365.4 g/mol
Physical formSolid
HS code38229090
InChIKeyLSQZJLSUYDQPKJ-BBGACYKPSA-N
IUPAC name(2S,5R,6R)-6-[[(2S)-2-amino-2-(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid

About Amoxicillin EP Impurity B

Amoxicillin EP Impurity B is supplied by Zemixal as a characterised reference material for Amoxicillin analysis. Key data (Reference Standard): CAS 26889-93-0, formula C16H19N3O5S and molar mass 365.4 g/mol. It is handled as a solid.

Where it is used

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

Handling and storage

It carries the GHS signal word Danger (H302, H317 and H334), so wear gloves and eye protection and work with good ventilation.

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

Reference standards for Amoxicillin

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

Amoxicillin 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 Amoxicillin EP Impurity B
Product nameAmoxicillin EP Impurity B
Catalogue numberZX-019855
CAS number26889-93-0
IUPAC name(2S,5R,6R)-6-[[(2S)-2-amino-2-(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid
Molecular formulaC16H19N3O5S
Molar mass365.4 g/mol
Exact mass365.1045
GradeReference Standard
Physical formSolid
XLogP3-2
H-bond donors / acceptors4 / 7
Topological polar surface area158 Ų
HS code38229090
InChIKeyLSQZJLSUYDQPKJ-BBGACYKPSA-N
SMILESCC1([C@@H](N2[C@H](S1)[C@@H](C2=O)NC(=O)[C@H](C3=CC=C(C=C3)O)N)C(=O)O)C
PubChem CID32324
SynonymsAmoxicillin Trihydrate - Impurity B, L-Amoxicillin, Amoxicillin, L-, Amoxicillin trihydrate impurity B

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
GHS08 Health hazard
Health hazard

Signal word Danger

  • H302Harmful if swallowed
  • H317May cause an allergic skin reaction
  • H334May cause allergy or asthma symptoms or breathing difficulties if inhaled

Precautionary statements P233, P260, P261, P264, P270, P271, P272, P280, P284, P301 + P317, P302 + P352, P304 + P340, P321, P330, P333 + P317, P342 + P316, P362 + P364, P403, 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 Amoxicillin EP Impurity B
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 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 Amoxicillin EP Impurity B

Which CAS number identifies Amoxicillin EP Impurity B?
Amoxicillin EP Impurity B is registered under CAS 26889-93-0. You may also see it listed as Amoxicillin Trihydrate - Impurity B, L-Amoxicillin, Amoxicillin, L-. Our catalogue number for this item is ZX-019855.
What are the formula and molar mass of Amoxicillin EP Impurity B?
For Amoxicillin EP Impurity B, its formula is C16H19N3O5S and its molar mass is 365.4 g/mol. The systematic (IUPAC) name is (2S,5R,6R)-6-[[(2S)-2-amino-2-(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid. InChIKey LSQZJLSUYDQPKJ-BBGACYKPSA-N lets you match it in any structure database.
How is Amoxicillin EP Impurity B used in pharmaceutical QC?
Amoxicillin EP Impurity B is a characterised reference material linked to Amoxicillin. 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 Amoxicillin EP Impurity B?
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 Amoxicillin EP Impurity B?
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 Amoxicillin EP Impurity B to my country?
Yes. Because Amoxicillin EP Impurity B 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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