Family · Pharmaceutical analytical standards
Isothipendyl
A first-generation H1 antihistamine of the azaphenothiazine family, described in the late 1950s; it is used in gels against itching from insect bites. This family brings together the active ingredient and other impurities.
Did you know?It is a close relative of promethazine: same side chain, but in the phenothiazine ring one carbon atom is replaced by a nitrogen, hence its description as a 1-azaphenothiazine.
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