2H-1,3-Thiazine-2,4(3H)-dione, dihydro-3-(phenylmethyl)-, 2-(1-phthalazinylhydrazone) 3-(Phenylmethyl)-2H-1,3-dihydrothiazine-2,4(3H)-dione 2-(1-phthalazinylhydrazone) 77407-70-6