CAS Registry Number

CAS 5421-66-9 — Bismarck Brown R (C.I. 21010)

Bismarck Brown R (C.I. 21010) is a diazo dye, primarily used in microscopy, histology, and biological staining for proteins, nucleic acids, and connective tissues. It produces a deep brown coloration, making it ideal for highlighting cellular structures in research and medical diagnostics. This chemical has a CAS number of 5421-66-9, a molecular weight of 461.39, and is stored at ambient conditions. It carries a signal word of "Warning" for safety classification. Molekula supplies Bismarck Brown R from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

Also known as: Bismarck Brown R (CI 21010) Dc