Rifaximin
-
- Category :
Intermediates/Pharmaceutical intermediates
- CAS NO : 80621-81-4
- EC NO :
- Molecular Formula : C43H51N3O11
- Main Specifications : assay not less than 98.50%
- 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;
Package: 25kg/paper drum or 10kg/paper drum
Uses : antibacterical
Molecular Structure:
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%)
CN
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