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Methyl (2S)-1-methyl-5-oxopyrrolidine-2-carboxylate

Also known as: (S)-Methyl 1-methyl-5-oxopyrrolidine-2-carboxylate, 1-Methyl-5-oxo-L-proline methyl ester, 1-Methyl-L-pyroglutamic acid methyl ester, Methyl 1-methyl-5-oxo-L-prolinate, Me-pGlu-Ome, L-Proline, 1-methyl-5-oxo-, methyl ester, L-Proline, 1-methyl-5-oxo-, methyl ester (9CI), methyl (2S)-1-methyl-5-oxopyrrolidine-2-carboxylate

Methyl (2S)-1-methyl-5-oxopyrrolidine-2-carboxylate (CAS 42435-88-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H11NO3 and a molecular weight of 157.167 g/mol. Key properties include a boiling point of 263.7±33.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 113.3±25.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
42435-88-1
Jingsj CID
J-1078550-9
Molecular Formula
C7H11NO3
Molecular Weight
157.167 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point263.7±33.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point113.3±25.4 °C
Exact Mass157.073898
PSA46.61000
LogP-0.87
Vapor Pressure0.0±0.5 mmHg at 25°C
Refractive Index1.477

Customs & Trade Information

HS Code2933790090
Summary2933790090. other lactams. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:9.0%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of Methyl (2S)-1-methyl-5-oxopyrrolidine-2-carboxylate?

The CAS number of Methyl (2S)-1-methyl-5-oxopyrrolidine-2-carboxylate is 42435-88-1.

What are the molecular formula and molecular weight of Methyl (2S)-1-methyl-5-oxopyrrolidine-2-carboxylate?

Methyl (2S)-1-methyl-5-oxopyrrolidine-2-carboxylate has molecular formula C7H11NO3 and molecular weight 157.167 g/mol.

What are the upstream and downstream products of Methyl (2S)-1-methyl-5-oxopyrrolidine-2-carboxylate?

For Methyl (2S)-1-methyl-5-oxopyrrolidine-2-carboxylate, Upstream Products: L-Pyroglutamic acid, iodomethane, Methyl L-pyroglutamate.

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

Last updated:

How to cite: Jingsj. "Methyl (2S)-1-methyl-5-oxopyrrolidine-2-carboxylate (CAS 42435-88-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1078550-9 (accessed 2026-11-09).

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