CAS Registry Number

CAS 553-24-2 — Neutral Red (C.I. 50040)

Neutral Red (C.I. 50040) is a pH indicator and vital stain used in microbiology and histology for cell viability and membrane integrity studies. It is a cationic dye with a red color in acidic conditions and yellow in basic conditions. CAS: 553-24-2, Molecular Formula: C15H17ClN4, Molecular Weight: 288.78 g/mol. Store at ambient temperature. Signal word: Warning. Molekula supplies Neutral Red (C.I. 50040) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.