Is Benzo Scarlet 4BNS vegan?

Benzo Scarlet 4BNS

Vegan

Benzo Scarlet 4BNS (Direct Red 72; Amyloid Red) is a synthetic direct dye used in textile dyeing and histological staining, including the identification of amyloid deposits. It is classified under the Colour Index as CI 29200.

Also known as Amyloid red, Direct red 72
CAS number 8005-64-9
CI number CI 29200
Last reviewed 3 June 2026

Sources

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.