We offer 4 chloropyridine 2 carbonyl chloride hydrochloride. Cas: 53750-66-6 molecular formula:c6h3cl2no molecular weight:176.00012 g.m.chemsys driven by its passion for adhering to international quality standards has created an excellent in-house r&d centre, focused on identifying and manufacturing high value added, complex new molecules for introduction in the generic market.!