pyrrole(redirected from C4H4NH)
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a basic, cyclic substance, obtained by destructive distillation of various animal substances.
Divinylenimine; a heterocyclic compound found in many biologically important substances, for example, heme.
1. A five-membered heterocyclic ring compound, C4H5N, having an odor similar to chloroform, that is the parent compound of protoporphyrin.
2. Any of various derivatives of this compound.
pyr·ro′lic (pĭ-rō′lĭk) adj.