Bismark Brown R

• CAT Number: I023436
• CAS Number: 8005-78-5
• Molecular Formula: C21H26Cl2N8
• Molecular Weight: 461.39
• Purity: 98%
• Synonyms: Bismark Brown R; Basic Brown 4; C.I. 21010; C.I. Basic Brown 4
• Solubility: To be determined
• Appearance: Solid powder
• Storage: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).
• IUPAC Name: (2,4-diamino-5-methylphenyl)-[3-(2,4-diamino-5-methylphenyl)iminoazaniumyl-4-methylphenyl]iminoazanium;dichloride
• InChI: InChI=1S/C21H24N8.2ClH/c1-11-4-5-14(26-28-20-6-12(2)15(22)9-17(20)24)8-19(11)27-29-21-7-13(3)16(23)10-18(21)25;;/h4-10H,22-25H2,1-3H3;2*1H/b28-26+,29-27+
• InChIKey: WLKAMFOFXYCYDK-CYXDXXRZSA-N
• SMILES: CC1=C(C=C(C=C1)N=[NH+]C2=C(C=C(C(=C2)C)N)N)[NH+]=NC3=C(C=C(C(=C3)C)N)N.[Cl-].[Cl-]

Bismarck Brown R(CAT: I023436) is a cationic diazo dye commonly used in histological and microbiological staining applications. It selectively binds to acidic components of cells, such as nucleic acids and acidic polysaccharides, providing a brown coloration that enhances contrast in microscopic imaging. Bismarck Brown R is often employed in Gram staining as a counterstain and in the visualization of fungi and bacteria. Additionally, it serves as a vital dye in the study of cellular structures and as a pH indicator in certain biochemical assays. Its reliability and versatility make it a valuable reagent in biological and clinical research.