Explanatory notes
… or not containing impurities), except mixtures of acyclic hydrocarbon isomers (other than stereoisomers), whether or … in the course of the same synthesis. Mixtures of acyclic hydrocarbon isomers ( other than stereoisomers), whether or … in the molecules of polycyclic compounds (e.g., polycyclic hydrocarbons, heterocyclic compounds) in which two cyclic …Legal note
… or not containing impurities), except mixtures of acyclic hydrocarbon isomers (other than stereoisomers), whether or …