European Pharmacopoeia (EP) Reference Standard
Synonym(s): Phentolamine methanesulfonate salt; 2-(N-[m-Hydroxyphenyl]-p-toluidinomethyl)imidazoline
Empirical Formula: C17H19N3O -+ CH4O3S
Formula Weight: 377.46
Linear Formula: C17H19N3O -+ CH3SO3H
MDL Number: MFCD00134201
Melting Point: 180-182 °C(lit.)