CAS Registry Number

CAS 699-98-9 — 2,3-Pyridinedicarboxylic anhydride (Quinolinic anhydride)

2,3-Pyridinedicarboxylic anhydride, also known as quinolinic anhydride, is a heterocyclic anhydride used in organic synthesis, particularly in the preparation of pharmaceuticals and agrochemicals. It is a white to off-white crystalline solid with a molecular formula of C7H3NO3 and a molecular weight of 149.10 g/mol. It is stable at ambient temperatures and should be stored under dry conditions. The substance is classified as a warning hazard due to its reactivity. Molekula supplies 2,3-Pyridinedicarboxylic anhydride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.