DIFF Subgroup
A61K 31/616 by carboxylic acids, e.g. acetylsalicylic acid
Introduced: January 2000
Full Title
Full titles differ between systems:
IPC:
Medicinal preparations containing organic active ingredients > Salicylic acid; Derivatives thereof > having the hydroxy group in position 2 esterified, e.g. salicylsulfuric acid > by carboxylic acids, e.g. acetylsalicylic acid
CPC:
Medicinal preparations containing organic active ingredients > Salicylic acid; Derivatives thereof > having the hydroxy group in position 2 esterified, e.g. salicylsulfuric acid (fosfosal A61K31/661) > by carboxylic acids, e.g. acetylsalicylic acid
No child classifications to compare. This is a leaf node in both IPC and CPC.