(1R,αR)-trans-Cypermethrin

Also known as: d-trans-Cypermethrin, (1R,αR)-trans-Cypermethrin, (1R,3S)-3-(2,2-Dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic acid (R)-cyano(3-phenoxyphenyl)methyl ester

(1R,αR)-trans-Cypermethrin (CAS 66841-24-5) is a compound in the Esters category listed in the Jingsj chemical database. It has the molecular formula C22H19Cl2NO3 and a molecular weight of 416.29700 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 66841-24-5
Jingsj CID: J-1313742-3
Molecular Formula: C₂₂H₁₉Cl₂NO₃
Molecular Weight: 416.29700 g/mol
Category: Esters
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	415.07400
PSA	59.32000
LogP	6.17798

Frequently Asked Questions

What is the CAS number of (1R,αR)-trans-Cypermethrin?

The CAS number of (1R,αR)-trans-Cypermethrin is 66841-24-5.

What are the molecular formula and molecular weight of (1R,αR)-trans-Cypermethrin?

(1R,αR)-trans-Cypermethrin has molecular formula C22H19Cl2NO3 and molecular weight 416.29700 g/mol.

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. "(1R,αR)-trans-Cypermethrin (CAS 66841-24-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1313742-3 (accessed 2026-11-09).

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