… or reproduced by synthesis, and their salts, ethers, esters and other derivatives. …
Explanatory notes
… salts thereof : 2939 .11 - - Concentrates of poppy straw; buprenorphine (INN), codeine, dihydrocodeine (INN), … These alkaloids are complex organic bases; they have a strong physiological action. Some are obtained by synthesis. … derivatives and, in general, any alkaloid derivative the structure of which is to a large extent the same as that of …