Is Thioflavin S vegan?

Direct Yellow 7 is also known as Thioflavin S.

Primuline is a synthetic dye containing the benzothiazole ring system, used as a fluorescent dye and in various textile and biological applications. It is also known as Direct Yellow 59 or Chloramine Yellow.

View full details page for Direct Yellow 7

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.