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241693 Rifampicin, USP CAS: 13292-46-1

Specifications
References
CAS Number
13292-46-1
Grade
USP
Molecular Formula
C43H58N4O12
Molecular Weight
822.94
EU Commodity Code
38220090
Shipping Temp
RT
Storage Temp
4°C
3-[[(4-Methyl-1-piperazin-yl)imino]methyl]rifamycin; Abrifam; Ba 41166/E; Eremfat; Famcin; L 5103 Lepetit; NSC 113926; Refampicin; Rifa; Rifacap; Rifadin; Rifadine; Rifaldazine; Rifaldin; Rifampicin SV; Rifampin; Rifamycin AMP; Rifaprodin; Rifoldin; Rifoldine; Riforal; Rimactan; Rimactane; Rimapen; Sinerdol; Tubocin

Semisynthetic antibiotic. Antibacerial (tuberculostatic). Inhibits RNA synthesis via RNA Polymerase binding. Specifically inhibits DNA-dependent RNA polymerase in bacteria by forming an inactive complex. Does not affect mammalian RNA polymerase.

Synonyms
3-[[(4-Methyl-1-piperazin-yl)imino]methyl]rifamycin; Abrifam; Ba 41166/E; Eremfat; Famcin; L 5103 Lepetit; NSC 113926; Refampicin; Rifa; Rifacap; Rifadin; Rifadine; Rifaldazine; Rifaldin; Rifampicin SV; Rifampin; Rifamycin AMP; Rifaprodin; Rifoldin; Rifoldine; Riforal; Rimactan; Rimactane; Rimapen; Sinerdol; Tubocin
CAS No
13292-46-1
Molecular Formula
C43H58N4O12
Molecular Weight
822.94
Purity
≥95 (Assay on dry basis)
Appearance
Red-brown crystalline powder
pH
4.5-6.5
Solubility
Very slightly soluble in water Freely soluble in chloroform Soluble in ethylacetate and in methanol
Infrared Spectrum
Conforms to structure
Melting Point
>180°C (dec.) (lit)
Loss on Drying
≤2%
Residual Solvents
Acetone: ≤5000ppm 1-Butanol: ≤5000ppm Ethyl acetate: ≤5000ppm Butyl acetate: ≤5000ppm N,N-Dimethylformamide: ≤880 ppm
E. coli
Absent
Mold and Yeast
≤100 cfu/g
Microbial Count
≤1000 cfu/g (TAMC)
Related Substances
Rifampicin quinone: ≤1.5% Any other individual related substance: ≤1% Total impurities other than Rifampin quinone: ≤3.5%
Storage and Stability
Store at 4ºC. Stable for 12 months after receipt.
References
1. Furesz, et al.: Antibiot. Chemother., 16, 316 (1970) 2. Gallo, G.G., et al.: Anal. Profiles Drug Subs., 5, 467 (1976)
USBio References
No references available
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