Rifamycin O

Product Name: Rifamycin O
CAS No.: 14487-05-9
Chemical Name: Rifamycin O
Synonyms: ctone;NSC 182391;Rifomycin O;RIFAMYCIN O;Levofloxacin O;Rifamycin O USP/EP/BP;Rifaximin EP Impurity F;Rifamycin EP Impurity C;Rifaximin impurity F (EP);Rifaximin EP Impurity F (Rifamycin O)
CBNumber: CB9404663
Molecular Formula: C39H47NO14
Formula Weight: 753.79
MOL File: 14487-05-9.mol

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Rifamycin O Property

Melting point:: 171°C (dec.)
alpha: D20 +71.5° (c = 1 in dioxane)
Boiling point:: 730.16°C (rough estimate)
Density: 1.2421 (rough estimate)
refractive index: 1.5350 (estimate)
storage temp.: -20°C Freezer, Under Inert Atmosphere
solubility: Chloroform (Slightly), Methanol (Slightly, Heated )
form: Solid
pka: 4.61±0.70(Predicted)
color: Yellow to Dark Yellow
Major Application: pharmaceutical small molecule
InChIKey: RAFHKEAPVIWLJC-QZBGMZITNA-N
SMILES: N1C2=CC5(OCC(=O)O5)c3c4c(c(c(c3C2=O)O)C)OC(O\C=C/C(C(C(C(C(C(C(C(\C=C/C=C(\C1=O)/C)C)O)C)O)C)OC(=O)C)C)OC)(C4=O)C

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Safety

WGK Germany: WGK 3
Storage Class: 11 - Combustible Solids
Hazard Classifications: Aquatic Acute 1
Aquatic Chronic 1
STOT SE 2

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H371May cause damage to organs

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P273Avoid release to the environment.

P309+P311IF exposed or if you feel unwell: call a POISON CENTER or doctor/physician.

P391Collect spillage. Hazardous to the aquatic environment

P405Store locked up.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Adipogen Life Sciences

Product number: AG-CN2-0333-M500
Product name: Rifamycin O
Purity: ≥90%(HPLC)
Packaging: 500mg
Price: $380
Updated: 2026/05/06

Adipogen Life Sciences

Product number: AG-CN2-0333-M050
Product name: Rifamycin O
Purity: ≥90%(HPLC)
Packaging: 50mg
Price: $70
Updated: 2026/05/06

aablocks

Product number: AA00AOD9
Product name: Spiro[1,3-dioxolane-2,9'(6'H)-[2,7](epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan]-1',4,6',11'(2'H)-tetrone, 5',17',19',21'-tetrahydroxy-23'-methoxy-2',4',12',16',18',20',22'-heptamethyl-21'-acetate
Purity: 95%
Packaging: 100mg
Price: $247
Updated: 2026/05/28

aablocks

Product number: AA00AOD9
Product name: Spiro[1,3-dioxolane-2,9'(6'H)-[2,7](epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan]-1',4,6',11'(2'H)-tetrone, 5',17',19',21'-tetrahydroxy-23'-methoxy-2',4',12',16',18',20',22'-heptamethyl-21'-acetate
Purity: 95%
Packaging: 250mg
Price: $469
Updated: 2026/05/28

aablocks

Product number: AA00AOD9
Product name: Spiro[1,3-dioxolane-2,9'(6'H)-[2,7](epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan]-1',4,6',11'(2'H)-tetrone, 5',17',19',21'-tetrahydroxy-23'-methoxy-2',4',12',16',18',20',22'-heptamethyl-21'-acetate
Purity: 95%
Packaging: 1g
Price: $691
Updated: 2026/05/28

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Rifamycin O Chemical Properties,Usage,Production

Chemical Properties

Yellow Solid

Uses

Rifamycin O (Rifaximin EP Impurity F) is a Rifaximin intermediate.

Definition

ChEBI: Rifamycin O is a member of rifamycins.

Rifamycin O Preparation Products And Raw materials

Raw materials

Preparation Products

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Rifamycin O Suppliers

Canada 1 China 137 Europe 2 India 5 South Korea 1 United Kingdom 4 United States 17 Global 167

J & K SCIENTIFIC LTD.

Tel: 18210857532; 18210857532
Fax: 86-10-82849933
Email: jkinfo@jkchemical.com
Country: China
ProdList: 96815
Advantage: 76

Nanjing Chemlin Chemical Co., Ltd

Tel: 025-83697070 13770331960
Fax: +86-25-83453306
Email: info@chemlin.com.cn
Country: China
ProdList: 16100
Advantage: 64

Chemsky（shanghai）International Co.,Ltd.

Tel: 021-50135380
Email: shchemsky@sina.com
Country: China
ProdList: 32321
Advantage: 50

Hunan Hui Bai Shi Biotechnology Co., Ltd.

Tel: 0731-85526065 13308475853
Email: ivy@hnhbsj.com
Country: China
ProdList: 7241
Advantage: 62

S.Z. PhyStandard Bio-Tech. Co., Ltd.

Tel: 0755-4000505016 13380397412
Fax: 0755 28094224
Email: 3001272453@qq.com
Country: China
ProdList: 5157
Advantage: 50

Shanghai Jian Chao Chemical Technology Co., Ltd.

Tel: 150-2103-5486 18017383231
Fax: qq：2817624287
Email: 983544897@qq.com
Country: China
ProdList: 9340
Advantage: 55

TargetMol Chemicals Inc.

Tel: 021-021-33632979 15002134094
Fax: 021-33632979
Email: marketing@targetmol.com
Country: China
ProdList: 8000
Advantage: 58

Quality Control Solutions Ltd.

Tel: 0755-66853366 13670046396
Fax: 0755-28363542
Email: orders@qcsrm.com
Country: China
ProdList: 18439
Advantage: 56

Finetech Industry Limited

Tel: 027-87465837 19945049750
Fax: 027-8777-2287
Email: sales@finetechnology-ind.com
Country: China
ProdList: 7970
Advantage: 58

Shanghai Kewel Chemical Co., Ltd.

Tel: 021-64609169 18901607656
Fax: 021-64609160
Email: greensnown@163.com
Country: China
ProdList: 9906
Advantage: 50

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View Lastest Price from Rifamycin O manufacturers

Shaanxi Dideu Medichem Co. Ltd

Product: Rifamycin O 14487-05-9
Price: US $1.00-1.00/KG
Min. Order: 1g
Purity: 99%
Supply Ability: 50tons
Release date: 2020-05-07

Hangzhou ICH Biofarm Co., Ltd

Product: Rifamycin O 14487-05-9
Price: US $0.00-0.00/kg
Min. Order: 0.1kg
Purity: 99.0%min
Supply Ability: 200kg
Release date: 2023-06-09

Career Henan Chemical Co

Product: Rifamycin O 14487-05-9
Price: US $1.00/KG
Min. Order: 1G
Purity: 98%
Supply Ability: 100KG
Release date: 2018-08-15

14487-05-9, Rifamycin ORelated Search:

RIFAMYCIN RIFAMYCIN SV 4-O-(Carboxymethyl)rifamycin Rifamycin Sodium 25-deacetoxy-25-hydroxyrifamycin S 2,3-DIMETHYLANISALDEHYDE 2-Vinyl-1,3-dioxolane Rifamycin O 2,5-DIMETHYL-P-ANISALDEHYDE 2,5-DIMETHYLPHENETHYLAMINE RIFAMYCIN B 3-Amino -rifamycin S Rifampicin Rifabutin Rifalazil Riboflavin Rifapentine 3-FORMYL RIFAMYCIN SV

ctone

Rifaximin impurity F (EP)

Rifaximin Impurity 6 (Rifaximin EP Impurity F)

spiro(1,3-dioxolane-2,9’(6’h)-(2,7)(epoxypentadeca(1,11,13)trienimino)naphtho(

4-O-Carboxymethyl-1-deoxy-1,4-dihydro-4-hydroxy-1-oxorifamycin γ-lactone

Rifomycin O

NSC 182391

4-O-(CARBOXYMETHYL)-1-DEOXY-1,4-diHYDRO-4-HYDROXY-1-OXO-G-LACTONE

RifaMycin,4-O-(carboxyMethyl)-1-deoxy-1,4-dihydro-4-hydroxy-1-oxo-, g-lactone

Rifaximin EP Impurity F

Rifamycin, 4-O-(carboxymethyl)-1-deoxy-1,4-dihydro-4-hydroxy-1-oxo-, gamma-lactone

RIFAMYCIN O

2,1-b)furan)-1’,4,6’,11’(2’h)-tetrone,5’,17’,19’,21’-tetrahydroxy-23’-methoxy

4’,12’,16’,18’,20’,22’-heptamethyl--221’-acetate

4-o-(carboxymethyl)-1-deoxy-1,4-dihydro-4-hydroxy-1-oxo-rifamycigamma-la

Rifamycin EP Impurity C

Rifaximin EP Impurity F (Rifamycin O)

Rifamycin, 4-O-(carboxymethyl)-1-deoxy-1,4-dihydro-4-hydroxy-1-oxo-, γ-lactone

Rifamycin Impurity 3(Rifamycin EP Impurity C)（Rifamycin O)

Rifamycin O USP/EP/BP

Spiro[1,3-dioxolane-2,9'(6'H)-[2,7](epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan]-1',4,6',11'(2'H)-tetrone, 5',17',19',21'-tetrahydroxy-23'-methoxy-2',4',12',16',18',20',22'-heptamethyl-21'-acetate

Rifamycin, 4-O-(carboxymethyl)-1-deoxy-1,4-dihydro-4-hydroxy-1-oxo-, γ-lactone (9CI, ACI)

4-O-(carboxymethyl)-1-deoxy-1,4-dihydro-4-hydroxy-1-oxo-Rifamycin γ-lactone (9CI ACI)

Rifaximin EP Impurity F（Rifamycin EP Impurity C）

Levofloxacin O

Rifamycin, 4-O-(carboxymethyl)-1-deoxy-1,4-dihydro-4-hydroxy-1-oxo-, γ-lactone (9CI, ACI)

4-o-(Carboxymethyl)-1-deoxy-1,4-dihydro-4-hydroxy-1-oxo-rifamycin gamma-lactone

spiro[1,3-dioxolane-2,9'(6'H)-[2,7](epoxy pentadecene azomethine)naphtho[2,1-b]furan]-1',4,6',11'(2'H)-tetraone, 5',17',19',21'-tetrahydroxy-23'-methoxy-2',4',12',16',18',20',22'-heptamethyl-21'-acetate

14487-05-9

C39H47NO14

Chiral Reagents

Intermediates & Fine Chemicals

Pharmaceuticals