variant.
isomeric; especially, of amino acids having two chiral centres, the second diastereoisomer to be discovered or synthesized
a diastereomer having the same configuration on four neighboring chiral carbon atoms as carbohydrate allose
nonself; nonself but of the same species.
different; other.
Amid.
Denoting the middle part.
Occupying a middle position.
Intermediate
During, in the middle of doing something.