1．Product name: 8-Amino-4-oxo-2-(tetrazol-5-yl)-4H-1-benzopyran
2．Alias: 8-AMINO-2-(1H-TETRAZOL-5-YL)-4H-1-BENZOPYRAN-4-ONE;8-amino-2-(1H-tetrazol-5-yl)-4H-1-benzopyran-4-one (intermediate of pranlukast);8-Amino-4-oxo-2-(tetrazol-5-yl)-4H-1-benzopyran;8-Amino-2-tetrazol-5-yl-4-oxo-4H-1-benzopyran
3．English name: 8-Amino-4-oxo-2-(tetrazol-5-yl)-4H-1-benzopyran
4．Alias: 8-AMINO-2-(1H-TETRAZOL-5-YL)-4H-1-BENZOPYRAN-4-ONE;8-amino-2-(1H-tetrazol-5-yl)-4H-1-benzopyran-4-one (intermediate of pranlukast);8-Amino-4-oxo-2-(tetrazol-5-yl)-4H-1-benzopyran;8-Amino-2-tetrazol-5-yl-4-oxo-4H-1-benzopyran
5．CAS NO.: 110683-22-2
6．Molecular formula: C₁₀H₇N₅O₂
7．Molecular weight: 229.19488
8．Structural formula: