Captopril EP Impurity A

Name: Captopril EP Impurity A
Brand: Vaqora Chemicals
SKU: VQ-021057

About Captopril EP Impurity A

Captopril EP Impurity A (CAS 64806-05-9) is a pharmacopeial impurity of Captopril offered by Vaqora Chemicals. Its molecular formula is C18H28N2O6S2 and its molecular weight is 432.6 g/mol. Alternative names: Captopril - Impurity A and Captopril disulfide.

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. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

As a characterised impurity of Captopril, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

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

Industries

Related to Captopril

View every impurity, metabolite and intermediate we list for Captopril.

Captopril impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Captopril EP Impurity A
Catalogue No.	VQ-021057
CAS Number	64806-05-9
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 formula	C₁₈H₂₈N₂O₆S₂
Molecular weight	432.6 g/mol
Exact mass	432.1389
Grade	Reference Standard
HSN code	38229090
InChIKey	ZWKRXBCJAUKDCI-MQYQWHSLSA-N
SMILES	C[C@H](CSSC[C@@H](C)C(=O)N1CCC[C@H]1C(=O)O)C(=O)N2CCC[C@H]2C(=O)O
PubChem CID	10002934

Physical properties
Physical form	Solid
LogP (XLogP3)	1.1
H-bond donors / acceptors	2 / 8
TPSA	166 Å²
Synonyms	Captopril - 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))-

Safety & hazard information (GHS)

Corrosive

Health hazard

Signal word: Danger

Hazard statements

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 is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

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 Captopril EP Impurity A?

The CAS Registry Number of Captopril EP Impurity A is 64806-05-9. It is also known as Captopril - Impurity A, Captopril disulfide, L-Proline, 1,1'-[dithiobis[(2S)-2-methyl-1-oxo-3,1-propanediyl]]bis-.

What is the molecular formula and molecular weight of Captopril EP Impurity A?

Captopril EP Impurity A has the molecular formula C18H28N2O6S2 and a molecular weight of 432.6 g/mol. Its 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.

What is Captopril EP Impurity A used for?

Captopril EP Impurity A is supplied as a characterised reference material related to Captopril. 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 Captopril EP Impurity A can I order?

We supply Captopril EP Impurity A 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 Captopril EP Impurity A?

Yes. Every lot of Captopril EP Impurity A 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 Captopril EP Impurity A be shipped internationally?

Yes. Captopril EP Impurity A is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.