C.I. Basic Yellow 40

碱性黄40

Also known as: Atacryl Brilliant Flavine 9GFF, Basonyl Brilliant Yellow FF 4048, Brilliant Flavine 10GFH, Basic Yellow 40, 2-[7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl]-1,3-dimethyl-1H-benzimidazolium chloride

C.I. Basic Yellow 40 (CAS 12221-86-2) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C20H20ClN3O2 and a molecular weight of 397.906 g/mol. It is also known as Atacryl Brilliant Flavine 9GFF, Basonyl Brilliant Yellow FF 4048 and Brilliant Flavine 10GFH. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 12221-86-2
Jingsj CID: J-1623725-6
Molecular Formula: C₂₀H₂₀ClN₃O₂
Chinese Name: 碱性黄40
Molecular Weight: 397.906 g/mol
Category: Organic Bases
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of C.I. Basic Yellow 40?

The CAS number of C.I. Basic Yellow 40 is 12221-86-2.

What are the molecular formula and molecular weight of C.I. Basic Yellow 40?

C.I. Basic Yellow 40 has molecular formula C20H20ClN3O2 and molecular weight 397.906 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "C.I. Basic Yellow 40 (CAS 12221-86-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1623725-6 (accessed 2026-10-26).

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