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N-Methyl-L-proline

Also known as: Hygric acid, (-)-Hygric acid, (-)-Hygrinic acid, N-Methylproline, (2S)-1-Methylpyrrolidine-2-carboxylic acid, (S)-1-Methylpyrrolidine-2-carboxylic acid, 1-Methyl-L-proline, L-Proline, 1-methyl-, N-alpha-methyl-L-proline, N-Methyl-L-proline monohydrate

N-Methyl-L-proline (CAS 475-11-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H11NO2 and a molecular weight of 129.157 g/mol. Key properties include a melting point of 114-116ºC(lit.), a boiling point of 227.1±33.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 91.1±25.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
475-11-6
Jingsj CID
J-1970607-1
Molecular Formula
C6H11NO2
Molecular Weight
129.157 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point114-116ºC(lit.)
Boiling Point227.1±33.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point91.1±25.4 °C
Exact Mass129.078979
PSA40.54000
LogP-0.17
AppearancePowder | White to off-white
Vapor Pressure0.0±0.9 mmHg at 25°C
Refractive Index1.498
Additional PropertySoluble in water and methanol(both 50 mg/ml-clear-colorless solution)

Activity & Biological Data

Additional Information[1]. Luigi Servillo, et al. Betaines in fruits of Citrus genus plants. J Agric Food Chem. 2011 Sep 14;59(17):9410-6.

Customs & Trade Information

HS Code2933990090
Summary2933990090. 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 N-Methyl-L-proline?

The CAS number of N-Methyl-L-proline is 475-11-6.

What are the molecular formula and molecular weight of N-Methyl-L-proline?

N-Methyl-L-proline has molecular formula C6H11NO2 and molecular weight 129.157 g/mol.

What are the upstream and downstream products of N-Methyl-L-proline?

For N-Methyl-L-proline, Upstream Products: L-Proline, Formaldehyde, Carbon dioxide; Downstream Products: Stachydrine, (S)-(-)-1-Methyl-2-pyrrolidinemethanol.

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

Last updated:

How to cite: Jingsj. "N-Methyl-L-proline (CAS 475-11-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1970607-1 (accessed 2026-11-09).

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