Search for "7-amino-4-methylcoumarin" in Full Text gives 3 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2020, 16, 1411–1417, doi:10.3762/bjoc.16.117
Beilstein J. Org. Chem. 2019, 15, 2782–2789, doi:10.3762/bjoc.15.270
Beilstein J. Org. Chem. 2011, 7, 1030–1035, doi:10.3762/bjoc.7.117