1-[(2S)-3-bromo-2-methyl-1-oxopropyl]-L-proline

Also known as: Captopril EP Impurity B, Captopril impurity B, Captopril Impurity 2, (S)-1-((S)-3-bromo-2-methylpropanoyl)pyrrolidine-2-carboxylic acid, 1-(3-bromo-2S-methylpropionyl)-L-proline, (2S)-1-[(2S)-3-Bromo-2-methylpropanoyl]pyrrolidine-2-carboxylic acid, L-Proline, 1-(3-bromo-2-methyl-1-oxopropyl)-, (S)-

1-[(2S)-3-bromo-2-methyl-1-oxopropyl]-L-proline (CAS 80629-35-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H14BrNO3 and a molecular weight of 264.11600 g/mol. Key properties include a melting point of 110-114 ºC and a density of 1.555±0.06 g/cm3 (20 ºC 760 Torr). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 80629-35-2
Jingsj CID: J-1971313-4
Molecular Formula: C₉H₁₄BrNO₃
Molecular Weight: 264.11600 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	110-114 ºC
Density	1.555±0.06 g/cm3 (20 ºC 760 Torr)
Exact Mass	263.01600
PSA	57.61000
LogP	1.03090

Activity & Biological Data

Additional Information	[1]. ANCA GABRIELA CÂRJE, et al. HPLC-UV METHOD APPROACH FOR THE ANALYSIS AND IMPURITY PROFILING OF CAPTOPRIL. [2]. Afrin S, et al. Eritadenine from Edible Mushrooms Inhibits Activity of Angiotensin Converting Enzyme in Vitro. J Agric Food Chem. 2016;64(11):2263-2268. [3]. Esmaeili S, et al. Captopril/enalapril inhibit promiscuous esterase activity of carbonic anhydrase at micromolar concentrations: An in vitro study. Chem Biol Interact. 2017;265:24-35.

Additional Information

[1]. ANCA GABRIELA CÂRJE, et al. HPLC-UV METHOD APPROACH FOR THE ANALYSIS AND IMPURITY PROFILING OF CAPTOPRIL. [2]. Afrin S, et al. Eritadenine from Edible Mushrooms Inhibits Activity of Angiotensin Converting Enzyme in Vitro. J Agric Food Chem. 2016;64(11):2263-2268. [3]. Esmaeili S, et al. Captopril/enalapril inhibit promiscuous esterase activity of carbonic anhydrase at micromolar concentrations: An in vitro study. Chem Biol Interact. 2017;265:24-35.

Frequently Asked Questions

What is the CAS number of 1-[(2S)-3-bromo-2-methyl-1-oxopropyl]-L-proline?

The CAS number of 1-[(2S)-3-bromo-2-methyl-1-oxopropyl]-L-proline is 80629-35-2.

What are the molecular formula and molecular weight of 1-[(2S)-3-bromo-2-methyl-1-oxopropyl]-L-proline?

1-[(2S)-3-bromo-2-methyl-1-oxopropyl]-L-proline has molecular formula C9H14BrNO3 and molecular weight 264.11600 g/mol.

What are the upstream and downstream products of 1-[(2S)-3-bromo-2-methyl-1-oxopropyl]-L-proline?

For 1-[(2S)-3-bromo-2-methyl-1-oxopropyl]-L-proline, Downstream Products: Captopril.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "1-[(2S)-3-bromo-2-methyl-1-oxopropyl]-L-proline (CAS 80629-35-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1971313-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.