rifamycin B

Modify Date: 2025-08-27 17:54:32

rifamycin B structure	Common Name	rifamycin B
	CAS Number	13929-35-6	Molecular Weight	755.80500
	Density	1.37g/cm3	Boiling Point	907.1ºC at 760 mmHg
	Molecular Formula	C₃₉H₄₉NO₁₄	Melting Point	N/A
	MSDS	N/A	Flash Point	502.4ºC

Name	rifamycin B
Synonym	More Synonyms

Density	1.37g/cm3
Boiling Point	907.1ºC at 760 mmHg
Molecular Formula	C₃₉H₄₉NO₁₄
Molecular Weight	755.80500
Flash Point	502.4ºC
Exact Mass	755.31500
PSA	227.61000
LogP	4.64990
Vapour Pressure	1.78E-35mmHg at 25°C
Index of Refraction	1.626
InChIKey	SQTCRTQCPJICLD-KTQDUKAHSA-M
SMILES	COC1C=COC2(C)Oc3c(C)c(O)c4c(O)c(cc(OCC(=O)[O-])c4c3C2=O)NC(=O)C(C)=CC=CC(C)C(O)C(C)C(O)C(C)C(OC(C)=O)C1C

CHEMICAL IDENTIFICATION

RTECS NUMBER :: AH0525000

CHEMICAL NAME :: Acetic acid, ((1,2-dihydro-5,6,17,19,21-pentahydroxy-23-methoxy-2, 4,12,16,18,20,22-hepta methyl-1,11-dioxo-2,7-(epoxypentadeca(1,11,13)trienim ino)naphtho(2,1-b)fur an-9-yl)- oxy)-, 21-acetate

CAS REGISTRY NUMBER :: 13929-35-6

LAST UPDATED :: 199801

DATA ITEMS CITED :: 13

MOLECULAR FORMULA :: C39-H49-N-O14

MOLECULAR WEIGHT :: 755.89

WISWESSER LINE NOTATION :: T C6 B65-24- A D E 2BC G& AV LO NO F&VM DU OU B&U D&U MHT&TTJ DO1VQ GQ IQ J1 M1 QO1 R1 SOV1 T

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >3 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ABANAE Antibiotics Annual. (New York, NY) 1953-60. For publisher information, see AMACCQ. Volume(issue)/page/year: 7,277,1959/1960

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >3 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ABANAE Antibiotics Annual. (New York, NY) 1953-60. For publisher information, see AMACCQ. Volume(issue)/page/year: 7,277,1959/1960

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >3 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ABANAE Antibiotics Annual. (New York, NY) 1953-60. For publisher information, see AMACCQ. Volume(issue)/page/year: 7,277,1959/1960

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 1680 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 85ERAY "Antibiotics: Origin, Nature, and Properties," Korzyoski, T., et al., eds., Washington, DC, American Soc. for Microbiology, 1978 Volume(issue)/page/year: 1,865,1978

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >3 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ABANAE Antibiotics Annual. (New York, NY) 1953-60. For publisher information, see AMACCQ. Volume(issue)/page/year: 7,277,1959/1960

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >3 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ABANAE Antibiotics Annual. (New York, NY) 1953-60. For publisher information, see AMACCQ. Volume(issue)/page/year: 7,277,1959/1960

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >3 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ABANAE Antibiotics Annual. (New York, NY) 1953-60. For publisher information, see AMACCQ. Volume(issue)/page/year: 7,277,1959/1960

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 2040 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 85KYAH "Merck Index; an Encyclopedia of Chemicals, Drugs, and Biologicals", 11th ed., Rahway, NJ 07065, Merck & Co., Inc. 1989 Volume(issue)/page/year: 11,1308,1989

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: >3 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ABANAE Antibiotics Annual. (New York, NY) 1953-60. For publisher information, see AMACCQ. Volume(issue)/page/year: 7,277,1959/1960

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: 1200 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 85ERAY "Antibiotics: Origin, Nature, and Properties," Korzyoski, T., et al., eds., Washington, DC, American Soc. for Microbiology, 1978 Volume(issue)/page/year: 1,865,1978

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 3 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 85ERAY "Antibiotics: Origin, Nature, and Properties," Korzyoski, T., et al., eds., Washington, DC, American Soc. for Microbiology, 1978 Volume(issue)/page/year: 1,865,1978 ** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 40 gm/kg/20D-I

TOXIC EFFECTS :: Skin and Appendages - dermatitis, other (after systemic exposure)

REFERENCE :: ABANAE Antibiotics Annual. (New York, NY) 1953-60. For publisher information, see AMACCQ. Volume(issue)/page/year: 7,277,1959/1960

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Intramuscular

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: 11 gm/kg/44D-I

TOXIC EFFECTS :: Skin and Appendages - dermatitis, other (after systemic exposure)

REFERENCE :: ABANAE Antibiotics Annual. (New York, NY) 1953-60. For publisher information, see AMACCQ. Volume(issue)/page/year: 7,277,1959/1960

RIDADR	NONH for all modes of transport

D-glucopyranose

CAS#:2280-44-6

~0%

(3R,4S,5R)-5-am...

CAS#:178948-66-8

rifamycin B

CAS#:13929-35-6

Literature: Guo, Jiantao; Frost Organic Letters, 2004 , vol. 6, # 10 p. 1585 - 1588

Evidence for a multidrug resistance-associated protein 1 (MRP1)-related transport system in cultured rat liver biliary epithelial cells.

Life Sci. 64(9) , 763-74, (1999)

Cellular accumulation and efflux of the anionic fluorescent dye carboxy-2',7'-dichlorofluorescein (CF) were studied in rat liver SDVI cells thought to derive from primitive bile ductules, in order to ...

Phase shifts in the stoichiometry of rifamycin B fermentation and correlation with the trends in the parameters measured online.

J. Biotechnol. 127(1) , 115-28, (2006)

Antibiotic fermentation processes are raw material cost intensive and the profitability is greatly dependent on the product yield per unit substrate consumed. In order to reduce costs, industrial proc...

Stereochemical assignment of intermediates in the rifamycin biosynthetic pathway by precursor-directed biosynthesis.

J. Am. Chem. Soc. 127(32) , 11202-3, (2005)

Natural and semisynthetic rifamycins are clinically important inhibitors of bacterial DNA-dependent RNA polymerase. Although the polyketide-nonribosomal peptide origin of the naphthalene core of rifam...

Rifamycin, 4-O-(carboxymethyl)-

rifomycin-B

4)-D-Manp

cellotetraose

Rifamycin impurity A

rifamycin-B

O4-carboxymethyl-rifamycin

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