106531-84-4 3,4-Dimethyl-1-(6-methyl-2-benzothiazolyl)pyrano(2,3-c)pyrazol-6(1H)-one BRN 5608328 Pyrano(2,3-c)pyrazol-6(1H)-one, 3,4-dimethyl-1-(6-methyl-2-benzothiazolyl)-