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n.1.(Chem.) The hypothetical hydrocarbon radical CH, regarded as an essential residue of certain organic compounds.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Another multiplet at 7.12 and 7.73 ppm is attributed to the protons of the methenyl group (F and G).
1HNMR spectrum of the free ligand exhibits strong singlets at 2.25 and 6.22 ppm, assigned to methyl (CH3) and methenyl (-CH=) protons in ketoenamine form.
Sterol methenyl transferase inhibitors alter the ultrastructure and function of the Leishmania amazonensis mitochondrion leading to potent growth inhibition.
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