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Is Auramine O vegan?

Auramine O

Vegan

Auramine O is a diarylmethane dye that appears as yellow needle crystals in its pure form. It is used as a fluorescent stain in histology and microbiology, particularly for the detection of acid-fast bacteria, and is insoluble in water but soluble in ethanol and DMSO.

Also known as Basic yellow 2, Canary yellow
CAS number 2465-27-2
CI number CI 41000
Last reviewed 3 June 2026

Sources

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