slightly yellow to pale green crystalline powder
They are used in pharmaceutical manufacturing especially antipsychotic drugs. Also used as a stabilizer against polymerization of acrylates.
ChEBI: 10-methylphenothiazine is a member of phenothiazines.
Recrystallise it (three times) from EtOH to give the -form (prisms). Recrystallisation from EtOH/*benzene gives the .-form (needles). It has also been purified by vacuum sublimation and is carefulmax 255nm (log 4.60) (pH 6.3) and 255nm in hexane. [Cymerman-Craig & Warburton Aust J Chem 9 294 1956, Beilstein 27 II 33, 27 III/IV 1215.]
