← Home

Is Azure A vegan?

Azure A

Vegan

Azure A is a cationic thiazine dye used as a biological stain in histology and cytology, particularly for staining nucleic acids, polysaccharides, and blood smears. It is a member of the azure dye series related to methylene blue.

Also known as Methylene azure A
CAS number 531-53-3
CI number CI 52005
Last reviewed 3 June 2026

Classifications are made to the best of our knowledge based on available scientific and regulatory sources. We cannot guarantee the accuracy of every entry, errors in the sources we draw from can always occur. This tool also cannot account for cross-contamination, which depends entirely on individual suppliers and producers. If you believe a classification is incorrect, you can report an issue.