Is Brilliant Cresyl Blue vegan?

Brilliant Cresyl Blue

Vegan

Brilliant Cresyl Blue is a synthetic oxazine dye used primarily as a supravital stain for counting reticulocytes in blood smears. It is a synthetic organic compound with no animal-derived components.

Also known as Basic dye, Cresyl Blue BBS, Union Green B
CAS number 81029-05-2
CI number CI 51010
Last reviewed 3 June 2026

Sources

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