(1S,2R)-Ephedrine hemihydrate

(1S,2R)-(+)-半水麻黄碱

Also known as: (1S,2R)-D-ephedrine base hemihydrate, (+)-Ephedrine hemihydrate, Benzenemethanol, a-[(1R)-1-(methylamino)ethyl]-, hydrate (2:1), (aS)-, (1S,2R)-2-(methylamino)-1-phenylpropan-1-ol hemihydrate

(1S,2R)-Ephedrine hemihydrate (CAS 144429-10-7) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C10H17NO2 and a molecular weight of 183.24700 g/mol. It is also known as (1S,2R)-D-ephedrine base hemihydrate, (+)-Ephedrine hemihydrate and Benzenemethanol, a-[(1R)-1-(methylamino)ethyl]-, hydrate (2:1), (aS)-. Key properties include a melting point of 39-43ºC(lit.), a boiling point of 332.7ºC at 760mmHg and a flash point of 155ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
144429-10-7
Jingsj CID
J-21800-1
Molecular Formula
C10H17NO2
Chinese Name
(1S,2R)-(+)-半水麻黄碱
Molecular Weight
183.24700 g/mol
Category
Organic Bases
Last updated
8/21/2026

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Physicochemical Properties

Melting Point39-43ºC(lit.)
Boiling Point332.7ºC at 760mmHg
Flash Point155ºC

Frequently Asked Questions

What is the CAS number of (1S,2R)-Ephedrine hemihydrate?

The CAS number of (1S,2R)-Ephedrine hemihydrate is 144429-10-7.

What are the molecular formula and molecular weight of (1S,2R)-Ephedrine hemihydrate?

(1S,2R)-Ephedrine hemihydrate has molecular formula C10H17NO2 and molecular weight 183.24700 g/mol.

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

Last updated:

How to cite: Jingsj. "(1S,2R)-Ephedrine hemihydrate (CAS 144429-10-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-21800-1 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.