CAS Registry Number

CAS 30931-67-0 — ABTS (2,2'-Azino-bis(3-ethylbenzthiazoline-6-sulfonic acid)diammonium salt)

ABTS (2,2'-Azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) diammonium salt) is a stable, water-soluble chromogen widely used as a substrate in colorimetric assays, particularly for measuring antioxidant activity, peroxidase activity, and DNA/RNA quantification. It generates a soluble green radical cation upon oxidation, enabling precise absorbance readings at 414 nm or 734 nm. This chemical has a CAS number of 30931-67-0, with the molecular formula C18H24N6O6S4 and a molecular weight of 548.68 g/mol. Store it between 2–8 °C, and handle with caution—it carries a **warning** signal for potential hazards. Molekula supplies ABTS from research to bulk quantities with full documentation and ISO 9001:2015 traceability.