134749-19-2 2-(2-Chloro-6,7-dimethoxy-4-quinazolinyl)hydrazinecarboxamide 2-Chloro-6,7-dimethoxy-4-semicarbazidoquinazoline BRN 4818315 Hydrazinecarboxamide, 2-(2-chloro-6,7-dimethoxy-4-quinazolinyl)-