L-Proline benzyl ester hydrochloride

Also known as: H-Pro-OBzl·HCl, Benzyl L-prolinate hydrochloride, (S)-Benzyl pyrrolidine-2-carboxylate hydrochloride, Phenylmethyl L-prolinate hydrochloride, L-Proline benzyl ester, L-Proline benzyl ester HCl, H-L-Pro-OBzl·HCl, Pro-OBzl HCl, L-Pyrrolidine-2-carboxylic acid benzyl ester HCl, L-Pro-OBn hydrochloride, Pro-OBn hydrochloride

L-Proline benzyl ester hydrochloride (CAS 16652-71-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H16ClNO2 and a molecular weight of 241.71 g/mol. Key properties include a melting point of 148-151 °C(lit.), a boiling point of 309ºC at 760 mmHg, a density of 1.121g/cm3 and a flash point of 140.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 16652-71-4
Jingsj CID: J-1130921-0
Molecular Formula: C₁₂H₁₆ClNO₂
Molecular Weight: 241.71 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	148-151 °C(lit.)
Boiling Point	309ºC at 760 mmHg
Density	1.121g/cm3
Flash Point	140.7ºC
Exact Mass	241.086960
PSA	38.33000
LogP	2.61260
Vapor Pressure	0.000659mmHg at 25°C
Refractive Index	1.4365
Additional Property	miscible

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 L-Proline benzyl ester hydrochloride?

The CAS number of L-Proline benzyl ester hydrochloride is 16652-71-4.

What are the molecular formula and molecular weight of L-Proline benzyl ester hydrochloride?

L-Proline benzyl ester hydrochloride has molecular formula C12H16ClNO2 and molecular weight 241.71 g/mol.

What are the upstream and downstream products of L-Proline benzyl ester hydrochloride?

For L-Proline benzyl ester hydrochloride, Upstream Products: L-Proline, Benzyl alcohol, Boc-L-Proline; Downstream Products: Boc-Ala-Pro-OH, L-Proline, Lisinopril.

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. "L-Proline benzyl ester hydrochloride (CAS 16652-71-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1130921-0 (accessed 2026-11-09).

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