2.
Name: 2-Butenoic acid,2-methyl-,(9R)-9,10- dihydro-8,8-dimethyl-2-oxo-2H,8H-benzo[1,- 2-b:3,4-b']dipyran-9-yl ester,(2Z)-
CAS: 20460-46-2



4.
Name: 9-(3-methyl-4-oxo-2-sulfanylidene-thiazolidin-5-yl)-10-thia-7-azabicyclo[4.4.0]deca-1,3,5-trien-8-one
CAS: 54326-51-1


