Equisetin

Also known as: LS-64262, Citalopram Impurity 39, (3E,5S)-3-[[(1S,2R,4aS,6R,8aR)-1,6-dimethyl-2-[(E)-prop-1-enyl]-4a,5,6,7,8,8a-hexahydro-2H-naphthalen-1-yl]-hydroxymethylidene]-5-(hydroxymethyl)-1-methylpyrrolidine-2,4-dione, (3E,5S)-3-{[(1S,2R,4aS,6R,8aR)-1,6-dimethyl-2-[(1E)-prop-1-en-1-yl]-1,2,4a,5,6,7,8,8a-octahydronaphthalen-1-yl](hydroxy)methylidene}-5-(hydroxymethyl)-1-methylpyrrolidine-2,4-dione, 2,4-Pyrrolidinedione, 5-(hydroxymethyl)-3-[hydroxy[(1S,2R,4aS,6R,8aR)-1,2,4a,5,6,7,8,8a-octahydro-1,6-dimethyl-2-(1E)-1-propen-1-yl-1-naphthalenyl]methylene]-1-methyl-, (3E,5S)-

Equisetin (CAS 57749-43-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C22H31NO4 and a molecular weight of 373.48600 g/mol. Key properties include a boiling point of 513.6ºC at 760 mmHg, a density of 1.187 g/cm3 and a flash point of 264.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 57749-43-6
Jingsj CID: J-1970746-1
Molecular Formula: C₂₂H₃₁NO₄
Molecular Weight: 373.48600 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Boiling Point	513.6ºC at 760 mmHg
Density	1.187 g/cm3
Flash Point	264.4ºC
Exact Mass	373.22500
PSA	77.84000
LogP	2.95920
Refractive Index	1.587

Activity & Biological Data

Additional Information	[1]. Burmeister HR, et al. Antibiotic produced by Fusarium equiseti NRRL 5537. Antimicrob Agents Chemother. 1974 Jun;5(6):634-9. [2]. Vesonder RF, et al. Equisetin, an antibiotic from Fusarium equiseti NRRL 5537, identified as a derivative of N-methyl-2, 4-pyrollidone. J Antibiot (Tokyo). 1979 Jul;32(7):759-61. [3]. Lee J, et al. The hierarchy quorum sensing network in Pseudomonas aeruginosa. Protein Cell. 2015 Jan;6(1):26-41. [4]. Zhang M, et al. Equisetin as potential quorum sensing inhibitor of Pseudomonas aeruginosa. Biotechnol Lett. 2018 May;40(5):865-870.

Additional Information

[1]. Burmeister HR, et al. Antibiotic produced by Fusarium equiseti NRRL 5537. Antimicrob Agents Chemother. 1974 Jun;5(6):634-9. [2]. Vesonder RF, et al. Equisetin, an antibiotic from Fusarium equiseti NRRL 5537, identified as a derivative of N-methyl-2, 4-pyrollidone. J Antibiot (Tokyo). 1979 Jul;32(7):759-61. [3]. Lee J, et al. The hierarchy quorum sensing network in Pseudomonas aeruginosa. Protein Cell. 2015 Jan;6(1):26-41. [4]. Zhang M, et al. Equisetin as potential quorum sensing inhibitor of Pseudomonas aeruginosa. Biotechnol Lett. 2018 May;40(5):865-870.

Frequently Asked Questions

What is the CAS number of Equisetin?

The CAS number of Equisetin is 57749-43-6.

What are the molecular formula and molecular weight of Equisetin?

Equisetin has molecular formula C22H31NO4 and molecular weight 373.48600 g/mol.

What are the upstream and downstream products of Equisetin?

For Equisetin, Upstream Products: 2,4-Hexadienal, (+)-dihydrocarvone.

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. "Equisetin (CAS 57749-43-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1970746-1 (accessed 2026-11-09).

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