CRESOL RED, SODIUM SALT Grade:ANALYTICAL GRADE CAS Number: 62625-29-0Synonym(s): o-Cresolsulfonphthalein Molecular Weight: 404.42Molecular Formula: C21H17NaO5S Storage Condition: ROOM TEMPERATURE CodeSizePriceQuantity 0500-5G 0500-25G A pH indicator (Orange to Yellow; range 0.2 – 1.8 and Yellow to Violet; range 7.0 – 8.8). Also used as a constituent of PCR reagent systems. Color Index: N/A