CPC Subgroup
A61K 31/625 having heterocyclic substituents, e.g. 4-salicycloylmorpholine, (sulfasalazine A61K31/635)
Full Title
Medicinal preparations containing organic active ingredients > Salicylic acid; Derivatives thereof > having heterocyclic substituents, e.g. 4-salicycloylmorpholine, (sulfasalazine A61K31/635)