1. Coumarin-4
Chemical name: 4-methyl-7-hydroxylcoumarin is a
laser dye used in tunable dye laser, also in the synthesis of pesticides and veterinary medicines.
2. Coumarin-1
Chemical name: 7-diethylin-4-methylcoumarin is a stable
laser dye used in tunable dye laser.
3. Chemical name: 3-chloro-4-methyl-7-hydroxylcoumarin
white or offwhite powder, as intermediate of pesticides and veterinary medicine.
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