102688-90-4 BUTANOIC ACID, 4-((7,8-DIHYDRO-7,7-DIMETHYL-4-METHOXY-6H-PYRIMIDO(4,5-b)(1,4)BEN Butanoic acid, 4-((7,8-dihydro-7,7-dimethyl-4-methoxy-6H-pyrimido(4,5-b)(1,4)benzothiazin-9-yl)amino)-, monohydrobromide