Introduce: Profile: Shanghai Beckwell Chemical Co., Ltd. specializes in the R&D, manufacturing and trade of fine chemicals. Our product line includes quaternary ammonium salt & base, derivatives of quinoline, isoquinoline, cinnoline, pyridine, chiral, morpholine, indole, coumarins, rhodamines and cyanine dyes. Our quinoline derivatives include 5,6,7,8-tetrahydro-quinoline, 3-methyl-quinoline, 3-quinolinecarboxylic acid, 2-quinolinecarboxaldehyde, 6-quinolinecarboxaldehyde and 8-quinolinecarboxylic acid. We offer coumarins such as 7-hydroxy-2-oxo-2h-1-benzopyran-3-carboxylic acid, 7-amino-4-methyl-2h-1-benzopyran-2-one, 8,9-dihydro-6,8,8-trimethyl-4-(trifluoromethyl)-2h-pyrano[3,2-g]quinolin-2-one, 3-amino-7-(dimethylamino)-4-methyl-2h-1-benzopyran-2-one and 7-methoxy-2-oxo-2h-1-benzopyran-3-acetic acid.
