(2S)-1-[(2S)-3-(Acetylthio)-2-methyl-1-oxopropyl]-L-proline
1-[(2S)-3-(乙酰硫代)-2-甲基-1-氧代丙基]-L-脯氨酸
Also known as: Captopril EP Impurity J, 1-[(2S)-3-(Acetylsulfanyl)-2-methylpropanoyl]-L-proline, (S)-3-Acetylthio-2-methylpropionyl-L-proline, Acetylcaptopril, N-[3-(Acetylthio)-(2S)-methylpropionyl]-L-proline, EINECS 265-250-7
(2S)-1-[(2S)-3-(Acetylthio)-2-methyl-1-oxopropyl]-L-proline (CAS 64838-55-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H17NO4S and a molecular weight of 259.322 g/mol. It is also known as Captopril EP Impurity J, 1-[(2S)-3-(Acetylsulfanyl)-2-methylpropanoyl]-L-proline and (S)-3-Acetylthio-2-methylpropionyl-L-proline. Key properties include a melting point of 76-82 °C(lit.), a boiling point of 464.8±40.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 234.9±27.3 °C. It is classified under GHS with signal word Warning and hazard statements H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 64838-55-7
- Jingsj CID
- J-47639-9
- Molecular Formula
- C11H17NO4S
- Chinese Name
- 1-[(2S)-3-(乙酰硫代)-2-甲基-1-氧代丙基]-L-脯氨酸
- Molecular Weight
- 259.322 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 76-82 °C(lit.) |
|---|---|
| Boiling Point | 464.8±40.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 234.9±27.3 °C |
| Exact Mass | 259.087830 |
| PSA | 99.98000 |
| LogP | 0.40 |
| Vapor Pressure | 0.0±2.5 mmHg at 25°C |
| Refractive Index | 1.549 |
GHS Safety & Compliance
- H319 — Causes serious eye irritation
Activity & Biological Data
| Additional Information | [1]. Li, Hp, et al. Synthesis and characterization of captopril derivatives. Res Chem Intermed 39, 621–629 (2013). [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. |
|---|
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of (2S)-1-[(2S)-3-(Acetylthio)-2-methyl-1-oxopropyl]-L-proline?
The CAS number of (2S)-1-[(2S)-3-(Acetylthio)-2-methyl-1-oxopropyl]-L-proline is 64838-55-7.
What are the molecular formula and molecular weight of (2S)-1-[(2S)-3-(Acetylthio)-2-methyl-1-oxopropyl]-L-proline?
(2S)-1-[(2S)-3-(Acetylthio)-2-methyl-1-oxopropyl]-L-proline has molecular formula C11H17NO4S and molecular weight 259.322 g/mol.
Is (2S)-1-[(2S)-3-(Acetylthio)-2-methyl-1-oxopropyl]-L-proline hazardous?
(2S)-1-[(2S)-3-(Acetylthio)-2-methyl-1-oxopropyl]-L-proline has GHS signal word Warning and hazard statements H319 — Causes serious eye irritation.
What are the upstream and downstream products of (2S)-1-[(2S)-3-(Acetylthio)-2-methyl-1-oxopropyl]-L-proline?
For (2S)-1-[(2S)-3-(Acetylthio)-2-methyl-1-oxopropyl]-L-proline, Upstream Products: L-Proline, Thioacetic acid.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(2S)-1-[(2S)-3-(Acetylthio)-2-methyl-1-oxopropyl]-L-proline (CAS 64838-55-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47639-9 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.