Vat Yellow 1 is a

vat dye Vat dyes are a class of dyes that are classified as such because of the method by which they are applied. Vat dyeing is a process that refers to dyeing that takes place in a bucket or vat. The original vat dye is indigo, once obtained only from p ...

, yellow in appearance under some conditions used in cloth dyeing. Its synonyms are flavanthrone and Indofast Yellow, and it is in the class of

anthraquinone Anthraquinone, also called anthracenedione or dioxoanthracene, is an aromatic organic compound with formula . Isomers include various quinone derivatives. The term anthraquinone however refers to the isomer, 9,10-anthraquinone (IUPAC: 9,10-dioxo ...

-type compounds.

References

Anthraquinone dyes Vat dyes Nitrogen heterocycles {{chemistry-stub