M 5112 (OTTO) 2-Methylpyridine-3-carboxylic acid, 98% Cas 3222-56-8 - used in synthesis of 1,8-dioxo-1,2,7,8-tetrahydro-2,7,10-triaza-anthracene-4,5-dicarbaldehydes (DOTTADs) and their imines. M 5112 (OTTO) 2-Methylpyridine-3-carboxylic acid, 98% Cas 3222-56-8 - used in synthesis of 7,7-dichloro-5,7-dihydro-thieno[3,4-b]pyridin-5-one.