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Crystal violet

Medication
Crystal violet or gentian violet, also known as methyl violet 10B or hexamethyl pararosaniline chloride, is a triarylmethane dye used as a histological stain and in Gram's method of classifying bacteria. Wikipedia
Formula: C25N3H30Cl
Molar mass: 407.979 g/mol
IUPAC ID: Tris(4-(dimethylamino)phenyl)methylium chloride
3D model (JSmol): Interactive image; Interactive image
ATC code: D01AE02 (WHO) G01AX09 (WHO)
Beilstein Reference: 3580948
Melting point: 205 °C (401 °F; 478 K)