IPIQ

HUMAN NECESSITIES

A61

MEDICAL OR VETERINARY SCIENCE; HYGIENE

A61K

PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES

31/00

Medicinal preparations containing organic active ingredients

A61K31/21

Esters, e.g. nitroglycerine, selenocyanates

A61K31/215

of carboxylic acids

A61K31/22

of acyclic acids, e.g. pravastatin

A61K31/23

of acids having a carboxyl group bound to a chain of seven or more carbon atoms

A61K31/232

having three or more double bonds, e.g. etretinate