2H-1-Benzopyran-2-one, 8-(nonyloxy)-3-(1H-tetrazol-5-yl)- 76253-49-1 8-(Nonyloxy)-3-(1H-tetrazol-5-yl)-2H-1-benzopyran-2-one 8-n-Nonyloxy-3-(1H-tetrazol-5-yl)coumarin