1400-44-8 2-Methoxy-3,5-dimethyl-6-(tetrahydro-4-(2-methyl-3-(4-nitrophenyl)-2-propenylidene)-2-furanyl)-4H-pyran-4-one 26469-10-3 2825-00-5 4H-Pyran-4-one, 3,5-dimethyl-, 2-methoxy-6-(tetrahydro-4-(beta-methyl-p-nitrocinnamylidene)-2-furyl)- 5-19-06-00099 (Beilstein Handbook Reference) Aureothin BRN 0058476 Mycolutein Strain 58 substance