isomeric

When two different bodies, like the above, have the same composition, they are said to be isomeric.

Owing to the structure of the naphthalene molecule there are two isomeric naphthols, whereas there is only one phenol.

Three isomeric phthalic acids are known, but only one of these is of use in the present branch of manufacture.

It corresponds to tartaric acid, and, like this substance, it occurs in four stereo-isomeric forms.

Dear Gould,—I feel like a white granular mass of amorphous crystals—my formula appears to be isomeric with Spasmotoxin.