Ramifenazone3615-24-5100 % similar Isopyrine hydrochloride18342-39-792 % similar Propyphenazone479-92-560 % similar Ampyrone83-07-857 % similar Diantipyrylmethane1251-85-056 % similar 4-Iodoantipyrine129-81-756 % similar 4-Aminoantipyrine hydrochloride22198-72-753 % similar Aminopyrine58-15-153 % similar 4-Formylantipyrine950-81-253 % similar Dipyrone68-89-341 % similar Antipyrine60-80-039 % similar Dipyrone monohydrate5907-38-039 % similar N-Isopropylaniline768-52-535 % similar