Supplier Page from Thermo Fisher Scientific for 3-(Diethoxyphosphoryloxy)-1,2,3-benzotriazin-4(3H)-one, 98%
Ethyl 3-pyridylacetate, 99% from Thermo Fisher Scientific
Ethyl phenylpropiolate, 98% from Thermo Fisher Scientific
Ethylbenzene, 99.8%, pure from Thermo Fisher Scientific