IPC Subgroup
A61K 31/21 Esters, e.g. nitroglycerine, selenocyanates
Introduced: July 1974
Last revised: January 2006
Full Title
Medicinal preparations containing organic active ingredients > Esters, e.g. nitroglycerine, selenocyanates
Classification Context
- Section:
- HUMAN NECESSITIES
- Class:
- MEDICAL OR VETERINARY SCIENCE; HYGIENE
- Subclass:
- PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
5 direct subcodes
Child Classifications
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- A61K 31/215 of carboxylic acids
- A61K 31/255 of sulfoxy acids or sulfur analogues thereof
- A61K 31/26 Cyanate or isocyanate esters; Thiocyanate or isothiocyanate esters
- A61K 31/265 of carbonic, thiocarbonic or thiocarboxylic acids, e.g. thioacetic acid, xanthogenic acid, trithiocarbonic acid
- A61K 31/27 of carbamic or thiocarbamic acids, e.g. meprobamate, carbachol, neostigmine