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- Details for Rifaximin
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Rifaximin 80621-81-4
Category : Intermediates/Pharmaceutical intermediates
CAS NO : 80621-81-4 EC NO : MF : C43H51N3O11 MW : 785.8785 Specification : assay not less than 98.50% Packing : 25kg/paper drum or 10kg/paper drum Product description : red-orange, hygroscopic, crystalline powder Slubility practically insoluble in water, soluble in acetone and in methanol Heavy metal not more than 20ppm Water not more than 4.5% Sulfated ash not more than 0.1% Assay 97.0% to 102.0% Related substances (1) sum of the impurities D and H: not more than 2.5 times the area of the principal peak in the chromatogram obtained with rference solution (a)(0.5%) (2)unspecified impurities:for each impurty,not more than 0.5times the area of the principal peak in the chromatogram obtained with reference solution(a)(0.1%) (3)total:not more than 5times the area of the principal peak in the chromatogram obtained with reference solution(a)(1.0%) Uses : antibacterical Synonyms : 2S-Acetyloxy-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11, 16,20,22,24,26-octamethyl-2,7-(epoxypentoeleca(1,11,13)trienimino)benzofuro[4,5-e]pyride[1,2-a]benzimidazole-1,15(2H)-dione;(2S,20S,21S,22R,23R,24S,25S,26S,27S,28E)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-1,15-dioxo-1,2-dihydro-2,7-(epoxypentadeca[1,11,13]trienoimino)furo[2'',3'':7',8']naphtho[1',2':4,5]imidazo[1,2-a]pyridin-25-yl acetate;(2S,16Z,18E,20S,21S,22R,24R,25S,26R,27S,28E)-5,6,21,23-tetrahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-1,15-dioxo-1,2-dihydro-2,7-(epoxypentadeca[1,11,13]trienoimino)furo[2'',3'':7',8']naphtho[1',2':4,5]imidazo[1,2-a]pyridin-25-yl acetate; Molecular Structure : 
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Rifaximin