138333-32-1 2H-1,4-Benzoxazine-4-acetic acid, 3,4-dihydro-2,8-diisopropyl-3-thioxo- 3,4-Dihydro-2,8-diisopropyl-3-thioxo-2H-1,4-benzoxazine-4-acetic acid AD 5467 AD-5467