Rifaximin

Post Date:
Nov 23,2018
Expiry Date:
May 22,2019
Detailed Description:
Cas No. :80621-81-4 Specs:Assay>98.0%(anhydrous substance)
Character Orange red crystalline powder
Solubility Freely soluble in methanol,chloroform and ethyl
acetate,soluble in ethanol,toluol,and hardly
soluble in aether,practically insoluble
in water
Loss on drying 2.00%
A)The single impurity 0.47%
B)The total impurity 1.21%
pH Value 6.30
Residue on Ignition 0.04%
Heavy Metals ≤ 20ppm
Assay(by HPLC) 99.20%
Particle Size 90% particles must be less than 45um.
CAS Registry Number:
80621-81-4
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 Formula:
C₄₃H₅₁N₃O₁₁
Molecular Weight:
785.8785
Molecular Structure:

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