Pyran, DIHYDR

Dihydro-2-formyl-2H-pyran, 1 279 Dihydrazides, 13 574, 599 Dihydric alcohols, dispersants, 8 710t Dihydroabietyl alcohol, in eye makeup,... 

H-2,3-Benzodiazepin 1,4-Dihydr-oxy-8-nitro- E9d, 358 (1,3-Dioxo - 3,4-H2 — 1 H-2-benzo-pyran/N2H4)... 

Mupirocin calcium cream 2% contains the dihydrate crystalline calcium hemisalt of the antibiotic mupirocin. Chemically, it is ((alpha) E,2 5,3 R,4 R,5 5)-5-[(2 5,3 5,4 5,5 5) -2,3 -epoxy-5-hydroxy-4-methylhexyl]tetra-hydro-3, 4-dihydroxy-(beta)-methyl-2//-pyran-2-crotonic acid, ester with 9-hydroxynonanoic acid, calcium salt (2 1),... 

Although many of the complex natural chromene, chroman, pyran and benzofuran structures clearly have arisen from reactive prenyl precursors which themselves have invariably not been isolated, certain prenyl derivatives of dihydric phenols have served as model compounds in cyclisation processes likely to be the pathways towards those naturally occurring compounds. 2-Prenylphenols and 2- and 4-prenylresorcinols and orcinols with C5, C o, and... 

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