We are offering protoporphyrin ix dimethyl ester. Protoporphyrin ix dimethyl estercas no.: 5522-66-7molecular formula: c36h38n4o4 molecular weight: 590.71purity:98.0%density:1.221 gcm3melting point:225-228 c(lit.)boiling point:1016.967 c at 760 mmhgflash point:568.841 cstorage temperature: 2-8cappearance:purple brown crystalline powder.