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Pharmacopeial Impurities (EP / USP / BP)

Captopril EP Impurity A

Reference StandardAvailable on request

Order Captopril EP Impurity A (CAS 64806-05-9) online at Zemixal. Lab and bulk packs, batch COA, fast global delivery. Ships from India to 120+ countries.

Pack sizes
Captopril EP Impurity A chemical structure
CAS number64806-05-9
FormulaC18H28N2O6S2
Molar mass432.6 g/mol
Physical formSolid
HS code38229090
InChIKeyZWKRXBCJAUKDCI-MQYQWHSLSA-N
IUPAC name(2S)-1-[(2S)-3-[[(2S)-3-[(2S)-2-carboxypyrrolidin-1-yl]-2-methyl-3-oxopropyl]disulfanyl]-2-methylpropanoyl]pyrrolidine-2-carboxylic acid

About Captopril EP Impurity A

Zemixal lists Captopril EP Impurity A for laboratories that identify, quantify or control Captopril and its related substances. For your records (Reference Standard), the material is defined by CAS 64806-05-9, formula C18H28N2O6S2 and molar mass 432.6 g/mol. It is handled as a solid.

Common uses in the lab and plant

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

Storage and safety notes

Classified under GHS with signal word Danger and hazard statements H318 and H361. Read the SDS before first use.

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

Reference standards for Captopril

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

Captopril 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 Captopril EP Impurity A
Product nameCaptopril EP Impurity A
Catalogue numberZX-020114
CAS number64806-05-9
IUPAC name(2S)-1-[(2S)-3-[[(2S)-3-[(2S)-2-carboxypyrrolidin-1-yl]-2-methyl-3-oxopropyl]disulfanyl]-2-methylpropanoyl]pyrrolidine-2-carboxylic acid
Molecular formulaC18H28N2O6S2
Molar mass432.6 g/mol
Exact mass432.1389
GradeReference Standard
Physical formSolid
XLogP31.1
H-bond donors / acceptors2 / 8
Topological polar surface area166 Ų
HS code38229090
InChIKeyZWKRXBCJAUKDCI-MQYQWHSLSA-N
SMILESC[C@H](CSSC[C@@H](C)C(=O)N1CCC[C@H]1C(=O)O)C(=O)N2CCC[C@H]2C(=O)O
PubChem CID10002934
SynonymsCaptopril - Impurity A, Captopril disulfide, L-Proline, 1,1'-[dithiobis[(2S)-2-methyl-1-oxo-3,1-propanediyl]]bis-, (2'S)-((2S,2'S)-3,3'-disulfanediylbis(2-methylpropanoyl))di-L-proline, Captopril Impurity A, 1,1'-{Disulfanediylbis[(2S)-2-methyl-1-oxopropane-3,1-diyl]}bis-L-proline, L-Proline, 1,1'-(dithiobis(2-methyl-1-oxo-3,1-propanediyl))bis-(S-(R*,R*))-

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

Safety and GHS hazards

GHS05 Corrosive
Corrosive
GHS08 Health hazard
Health hazard

Signal word Danger

  • H318Causes serious eye damage
  • H361Suspected of damaging fertility or the unborn child

Precautionary statements P203, P264 + P265, P280, P305 + P354 + P338, P317, P318, 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 Captopril EP Impurity A
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 Captopril EP Impurity A

Which CAS number identifies Captopril EP Impurity A?
Captopril EP Impurity A is registered under CAS 64806-05-9. You may also see it listed as Captopril - Impurity A, Captopril disulfide, L-Proline, 1,1'-[dithiobis[(2S)-2-methyl-1-oxo-3,1-propanediyl]]bis-. Our catalogue number for this item is ZX-020114.
What are the formula and molar mass of Captopril EP Impurity A?
For Captopril EP Impurity A, its formula is C18H28N2O6S2 and its molar mass is 432.6 g/mol. The systematic (IUPAC) name is (2S)-1-[(2S)-3-[[(2S)-3-[(2S)-2-carboxypyrrolidin-1-yl]-2-methyl-3-oxopropyl]disulfanyl]-2-methylpropanoyl]pyrrolidine-2-carboxylic acid. InChIKey ZWKRXBCJAUKDCI-MQYQWHSLSA-N lets you match it in any structure database.
How is Captopril EP Impurity A used in pharmaceutical QC?
Captopril EP Impurity A is a characterised reference material linked to Captopril. 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 Captopril EP Impurity A?
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 Captopril 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 Captopril EP Impurity A to my country?
Yes. Because Captopril 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.

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