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Erythromycin A Oxime, also known as (9E)-Erythromycin A Oxime, is a semi-synthetic derivative of the antibiotic Erythromycin. It is an off-white solid and is recognized as a metabolite of Roxithromycin (R700850) in humans. Erythromycin A Oxime has been developed to address the issue of acid lability and enhance the oral absorption of Erythromycin A, while maintaining its antibacterial potency. Although it has not been commercialized, it played a significant role in the development of other macrolide antibiotics such as Azithromycin and Roxithromycin.

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  • (3R,4S,5S,6R,7R,9R,11S,12R,13S,14R,E)-6-(((2R,3R,4S,6R)- 4-(dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2- yl)oxy)-14-ethyl-7,12,13-trihydroxy-4-(((2R,4R,5S,6S)-5- hydroxy-4-methoxy-4,6-dimet

    Cas No: 111321-02-9

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  • Hangzhou Huarong Pharm Co., Ltd.
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  • 111321-02-9 Structure
  • Basic information

    1. Product Name: Erythromycin A Oxime
    2. Synonyms: Erythromycin A Oxime;(9E)-ErythroMycin A OxiMe;Erythromycin Impurity J;(3R,4S,5S,6R,7R,9R,11S,12R,13S,14R,E)-6-(((2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-14-ethyl-7,12,13-trihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-10-(hydroxyimino)-3,5,7,9;Azithromycin Impurity S ((9E)-Erythromycin A Oxime);(9E)-Erythromycin A Oxime Roxithromycin EP Impurity C;Roxithromycin EP Impurity C (Erythromycin Impurity J)
    3. CAS NO:111321-02-9
    4. Molecular Formula: C37H68N2O13
    5. Molecular Weight: 748.94142
    6. EINECS: N/A
    7. Product Categories: Intermediates & Fine Chemicals;Pharmaceuticals;Chiral Reagents, Metabolites & Impurities, Pharmaceuticals, Intermediates & Fine Chemicals
    8. Mol File: 111321-02-9.mol
  • Chemical Properties

    1. Melting Point: 156-166 °C
    2. Boiling Point: 841°C at 760 mmHg
    3. Flash Point: 462.4°C
    4. Appearance: /
    5. Density: 1.28g/cm3
    6. Vapor Pressure: 7.27E-33mmHg at 25°C
    7. Refractive Index: 1.552
    8. Storage Temp.: Refrigerator
    9. Solubility: Chloroform (Slightly), DMSO (Slightly), Ethanol (Slightly), Methanol (Slightly,
    10. PKA: 11.96±0.70(Predicted)
    11. CAS DataBase Reference: Erythromycin A Oxime(CAS DataBase Reference)
    12. NIST Chemistry Reference: Erythromycin A Oxime(111321-02-9)
    13. EPA Substance Registry System: Erythromycin A Oxime(111321-02-9)
  • Safety Data

    1. Hazard Codes: N/A
    2. Statements: N/A
    3. Safety Statements: N/A
    4. WGK Germany:
    5. RTECS:
    6. HazardClass: N/A
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 111321-02-9(Hazardous Substances Data)

111321-02-9 Usage

Uses

1. Used in Pharmaceutical Industry:
Erythromycin A Oxime is used as an intermediate for the synthesis of Azithromycin, a widely used antibiotic effective against a broad range of bacterial infections.
2. Used in Gastroenterology:
Erythromycin A Oxime is used as an antibacterial agent for treating infections caused by Helicobacter pylori, a bacterium that can lead to ulcers and other gastrointestinal issues.
3. Used in Research and Development:
As a semi-synthetic analogue of Erythromycin, Erythromycin A 9-oxime has been instrumental in the development of new macrolide antibiotics with improved properties, such as ring-expanded aza-erythromycins (e.g., Azithromycin) and oxime ethers (e.g., Roxithromycin).

Check Digit Verification of cas no

The CAS Registry Mumber 111321-02-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,3,2 and 1 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 111321-02:
(8*1)+(7*1)+(6*1)+(5*3)+(4*2)+(3*1)+(2*0)+(1*2)=49
49 % 10 = 9
So 111321-02-9 is a valid CAS Registry Number.
InChI:InChI=1/C37H68N2O13/c1-14-25-37(10,45)30(41)20(4)27(38-46)18(2)16-35(8,44)32(52-34-28(40)24(39(11)12)15-19(3)48-34)21(5)29(22(6)33(43)50-25)51-26-17-36(9,47-13)31(42)23(7)49-26/h18-26,28-32,34,40-42,44-46H,14-17H2,1-13H3/b38-27+/t18-,19-,20+,21+,22-,23+,24+,25-,26+,28-,29+,30-,31+,32-,34+,35-,36-,37-/m1/s1

111321-02-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name (E)-Erythromycin oxime

1.2 Other means of identification

Product number -
Other names (9E)-Erythromycin A Oxime

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:111321-02-9 SDS

111321-02-9Upstream product

111321-02-9Relevant articles and documents

Hybrids of macrolides and nucleobases or nucleosides

Costa, Anna M.,Vilarrasa, Jaume

, p. 3371 - 3375 (2000)

A few examples of hybrids/conjugates/chimeras of erythromycin A derivatives and nucleobases (uracil and thymine) or thymidine-derived nucleosides are reported. Linkers and reaction conditions have been investigated to avoid the degradation of the macrolide moiety (glycoside hydrolysis, ring cleavage, dehydration, etc.). (C) 2000 Elsevier Science Ltd.

Synthesis and antibacterial activity of new 9-O-arylpropenyloxime ketolides

Nam, Ghilsoo,Kim, Yang Soo,Choi, Kyung Il

, p. 2671 - 2674 (2010)

A novel series of 9-O-arylpropenyloxime ketolide was synthesized and evaluated for their antibacterial activity. This series of ketolide exhibited potent activity against clinically isolated gram-positive strains including Staphylococcus pneumoniae and St

Using chemical probes to investigate the sub-inhibitory effects of azithromycin

Glansdorp, Freija G.,Spandl, Richard J.,Swatton, Jane E.,Loiseleur, Olivier,Welch, Martin,Spring, David R.

, p. 4120 - 4124 (2008)

The antibacterial drug azithromycin has clinically beneficial effects at sub-inhibitory concentrations for the treatment of conditions characterized by chronic Pseudomonas aeruginosa infection, such as cystic fibrosis. These effects are, in part, the result of inhibition of bacterial biofilm formation. Herein, the efficient synthesis of azithromycin in 4 steps from erythromycin and validation of the drug's ability to inhibit biofilm formation at sub-MIC (minimum inhibitory concentration) values are reported. Furthermore, the synthesis of immobilized and biotin-tagged azithromycin analogues is described. These chemical probes were used in pull-down assays in an effort to identify azithromycin's binding partners in vivo. Results from these assays revealed, as expected, mainly ribosomal-related protein binding partners, suggesting that this is the primary target of the drug. This was further confirmed by studies using a P. aeruginosa strain containing plasmid-encoded ermC, which expresses a protein that modifies 23S rRNA and so blocks macrolide entry to the ribosome. In this strain, no biofilm inhibition was observed. This work supports the hypothesis that the sub-inhibitory effects of azithromycin are mediated through the ribosome. Moreover, the synthesis of these chemical probes, and proof of their utility, is of value in global target identification in P. aeruginosa and other species.

Design, synthesis and biological evaluation of a halogenated phenazine-erythromycin conjugate prodrug for antibacterial applications

Yang, Hongfen,Liu, Ke,Jin, Shouguang,Huigens III, Robert W.

, p. 1483 - 1487 (2021)

There is a significant need for new antibacterial agents as pathogenic bacteria continue to threaten human health through the acquisition of resistance and tolerance towards existing antibiotics. Over the last several years, our group has been developing

Roxithromycin intermediate preparation method

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Paragraph 0057-0060; 0061-0064; 0065-0068; 0069-0076, (2017/10/05)

The invention discloses a preparation method of a roxithromycin intermediate. The method comprises the following steps: (i) mixing and reacting a compound, triethylamine and hydroxylamine hydrochloride, the structures of which are shown in a formula II, to obtain the compound the structure of which is shown in a formula III; (ii) mixing the compound the structure of which is shown in the formula III, with methanol or ethanol, alkalinizing and mixing with water, to obtain a compound the structure of which is shown in the formula I.

HYDROGEN BOND FORMING FLUORO KETOLIDES FOR TREATING DISEASES

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Page/Page column 31-32, (2012/03/27)

The invention described herein pertains to a novel macrolide antibacterial agent of formula (I): A-L-Q, as defined herein, and pharmaceutically acceptable salts, solvates, and hydrates thereof. Inter alia, the new macrolide antibacterial agent is active a

Chemistry and biology of macrolide antiparasitic agents

Lee, Younjoo,Choi, Jun Yong,Fu, Hong,Harvey, Colin,Ravindran, Sandeep,Roush, William R.,Boothroyd, John C.,Khosla, Chaitan

experimental part, p. 2792 - 2804 (2011/06/24)

Macrolide antibacterial agents inhibit parasite proliferation by targeting the apicoplast ribosome. Motivated by the long-term goal of identifying antiparasitic macrolides that lack antibacterial activity, we have systematically analyzed the structure-activity relationships among erythromycin analogues and have also investigated the mechanism of action of selected compounds. Two lead compounds, N-benzylazithromycin (11) and N-phenylpropylazithromycin (30), were identified with significantly higher antiparasitic activity and lower antibacterial activity than erythromycin or azithromycin. Molecular modeling based on the cocrystal structure of azithromycin bound to the bacterial ribosome suggested that a substituent at the N-9 position of desmethylazithromycin could improve selectivity because of species-specific interactions with the ribosomal L22 protein. Like other macrolides, these lead compounds display a strong "delayed death phenotype"; however, their early effects on T. gondii replication are more pronounced.

Synthesis and antibacterial activity of new 4″-O-carbamates of 11,12-cyclic carbonate erythromycin A 6,9-imino ether

Zhang, Ling,Jiao, Bo,Yang, Xiangrui,Liu, Lin,Ma, Shutao

experimental part, p. 243 - 247 (2012/02/16)

A series of new 4″-O-carbamates of 11,12-cyclic carbonate erythromycin A 6,9-imino ether were synthesized and evaluated for their in vitro antibacterial activity. All the desired compounds demonstrated favorable activity (0.03 μg ml-1) against erythromycin-susceptible Streptococcus pneumoniae comparable to the references, exhibiting 133-fold higher activity than precursor 2 or 3. Similarly, all of the analogs exhibited improved activity against the erythromycin-resistant S. pneumoniae encoded by the erm gene and the erm and mef genes, showing 4-32-fold more effectiveness than erythromycin A.

Design, synthesis, and anti-Helicobacter pylori activity of erythromycin A (E)-9-oxime ether derivatives

Nam, Ghilsoo,Kang, Tae Won,Shin, Jung Hyu,Choi, Kyung Il

, p. 569 - 572 (2007/10/03)

The synthesis and anti-Helicobacter pylori (H. pylori) activity evaluation of a new series of erythromycin A (E)-9-oxime ether derivatives are described. These compounds exhibited comparable in vitro anti-H. pylori activity and improved acid stability com

NOVEL MACROLIDE DERIVATIVES HAVAING EFFECT OF POTENTIATING ANTIFUNGAL ACTIVITY

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Page/Page column 14, (2008/06/13)

The present invention relates to substances having enhancing effect for activities ofazole antifungal agents, acting at low concentration and within short term against fungal infection and making possibility for reducing frequency of appearance of resista

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