title: Benzopyrones. 7. Synthesis and antiallergic activity of some 2-(5-tetrazolyl)chromones.
mesh_terms: D000818:Animals; D001393:Azoles / Q000138:chemical synthesis / Q000627:therapeutic use / Q000633:toxicity; D001578:Benzopyrans / Q000138:chemical synthesis* / Q000627:therapeutic use / Q000633:toxicity; D006967:Hypersensitivity / Q000188:drug therapy*; D007659:Ketones / Q000138:chemical synthesis / Q000627:therapeutic use / Q000633:toxicity; D007928:Lethal Dose 50; D051379:Mice; D010323:Passive Cutaneous Anaphylaxis; D051381:Rats; D013329:Structure-Activity Relationship
chemical_list: D001393:Azoles; D001578:Benzopyrans; D007659:Ketones