Physostigmine hemisulfate

毒扁豆碱半硫酸盐

Also known as: Eserine hemisulfate, Eserine sulfate, Physostigmine sulfate, Physostigmine hemisulfate salt, Eserine hemisulfate salt, PHYSOSTIGMINE SULFATE (2:1), Pyrrolo[2,3-b]indol-5-ol, 1,2,3,3a,8,8a-hexahydro-1,3a,8-trimethyl-, methylcarbamate (ester), (3aS,8aR)-, sulfate (2:1)

Physostigmine hemisulfate (CAS 64-47-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C15H21N3O2.1/2H2O4S and a molecular weight of 648.77100 g/mol. It is also known as Eserine hemisulfate, Eserine sulfate and Physostigmine sulfate. Key properties include a boiling point of 557.5ºC at 760 mmHg and a flash point of 291ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
64-47-1
Jingsj CID
J-30942-8
Molecular Formula
C15H21N3O212H2O4S
Chinese Name
毒扁豆碱半硫酸盐
Molecular Weight
648.77100 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point557.5ºC at 760 mmHg
Flash Point291ºC

GHS Safety & Compliance

Acute ToxicitySignal word: Danger

Frequently Asked Questions

What is the CAS number of Physostigmine hemisulfate?

The CAS number of Physostigmine hemisulfate is 64-47-1.

What are the molecular formula and molecular weight of Physostigmine hemisulfate?

Physostigmine hemisulfate has molecular formula C15H21N3O2.1/2H2O4S and molecular weight 648.77100 g/mol.

Is Physostigmine hemisulfate hazardous?

Physostigmine hemisulfate has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "Physostigmine hemisulfate (CAS 64-47-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30942-8 (accessed 2026-10-25).

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