Atracurium besylate

Also known as: Atracurium besilate, BW-33A, Tracrium, 2,2'-[1,5-Pentanediylbis[oxy(3-oxo-3,1-propanediyl)]]bis[1-[(3,4-dimethoxyphenyl)methyl]-1,2,3,4-tetrahydro-6,7-dimethoxy-2-methylisoquinolinium] dibenzenesulfonate

Atracurium besylate (CAS 64228-81-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C65H82N2O18S2 and a molecular weight of 1243.479 g/mol. Key property: a melting point of 85-90ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 64228-81-5
Jingsj CID: J-1992253-3
Molecular Formula: C₆₅H₈₂N₂O₁₈S₂
Molecular Weight: 1243.479 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	85-90ºC
Exact Mass	1242.500366
PSA	257.60000
LogP	11.32610
Storage Conditions	2-8°C
Additional Property	H2O: ~27 mg/mL

Activity & Biological Data

Additional Information	[1]. Fagerlund, M.J., M. Dabrowski, and L.I. Eriksson, Pharmacological characteristics of the inhibition of nondepolarizing neuromuscular blocking agents at human adult muscle nicotinic acetylcholine receptor. Anesthesiology, 2009. 110(6): p. 1244-1252. [2]. Neill, E. and D. Chapple, Metabolic studies in the cat with atracurium: a neuromuscular blocking agent designed for non-enzymic inactivation at physiological pH. Xenobiotica, 1982. 12(3): p. 203-210.

Additional Information

[1]. Fagerlund, M.J., M. Dabrowski, and L.I. Eriksson, Pharmacological characteristics of the inhibition of nondepolarizing neuromuscular blocking agents at human adult muscle nicotinic acetylcholine receptor. Anesthesiology, 2009. 110(6): p. 1244-1252. [2]. Neill, E. and D. Chapple, Metabolic studies in the cat with atracurium: a neuromuscular blocking agent designed for non-enzymic inactivation at physiological pH. Xenobiotica, 1982. 12(3): p. 203-210.

Frequently Asked Questions

What is the CAS number of Atracurium besylate?

The CAS number of Atracurium besylate is 64228-81-5.

What are the molecular formula and molecular weight of Atracurium besylate?

Atracurium besylate has molecular formula C65H82N2O18S2 and molecular weight 1243.479 g/mol.

What are the upstream and downstream products of Atracurium besylate?

For Atracurium besylate, Upstream Products: Atracurium dioxalate, Methyl benzenesulfonate, (3,4-Dimethoxyphenyl)acetic acid.

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. "Atracurium besylate (CAS 64228-81-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1992253-3 (accessed 2026-11-09).

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