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CAS

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128791-77-5

p-nitrobenzyl (2S,3S)-2-(imidazol-1-yl)carbonyloxymethyl-4-oxo-3-(phenylacetamido)azetidine-1-acetate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

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  • 128791-77-5 Structure

  • Basic information

    1. Product Name: p-nitrobenzyl (2S,3S)-2-(imidazol-1-yl)carbonyloxymethyl-4-oxo-3-(phenylacetamido)azetidine-1-acetate
    2. Synonyms:
    3. CAS NO:128791-77-5
    4. Molecular Formula:
    5. Molecular Weight: 521.486
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 128791-77-5.mol

  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: N/A
    3. Flash Point: N/A
    4. Appearance: N/A
    5. Density: N/A
    6. Refractive Index: N/A
    7. Storage Temp.: N/A
    8. Solubility: N/A
    9. CAS DataBase Reference: p-nitrobenzyl (2S,3S)-2-(imidazol-1-yl)carbonyloxymethyl-4-oxo-3-(phenylacetamido)azetidine-1-acetate(CAS DataBase Reference)
    10. NIST Chemistry Reference: p-nitrobenzyl (2S,3S)-2-(imidazol-1-yl)carbonyloxymethyl-4-oxo-3-(phenylacetamido)azetidine-1-acetate(128791-77-5)
    11. EPA Substance Registry System: p-nitrobenzyl (2S,3S)-2-(imidazol-1-yl)carbonyloxymethyl-4-oxo-3-(phenylacetamido)azetidine-1-acetate(128791-77-5)

  • 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: 128791-77-5(Hazardous Substances Data)

128791-77-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128791-77-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,7,9 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 128791-77:
(8*1)+(7*2)+(6*8)+(5*7)+(4*9)+(3*1)+(2*7)+(1*7)=165
165 % 10 = 5
So 128791-77-5 is a valid CAS Registry Number.

128791-77-5Relevant articles and documents

Enantioselective synthesis of 2-isocephem and 2-isooxacephem antibiotics

Nitta, Hajime,Ueda, Ikuo,Hatanaka, Minoru

, p. 1793 - 1798 (2007/10/03)

The azido lactone 8 was prepared in a highly stereoselective manner by introduction of an azide function to the lactone 6 derived from L-aspartic acid, and then was converted into (2S,3S)-3-amino-2-azido-4-hydroxybutanoic acid 4. Four-component condensation of the amino acid 4, p-nitrobenzyl isocyanide and formaldehyde or 2,2-diethoxyacetaldehyde furnished the corresponding 3,4-cis-azetidinone 16 or 26 in excellent yield. 3-Methoxy-2-isooxacephalosporin was prepared by the intramolecular acylation of imidazolide 23 derived from compound 16. 3-Unsubstituted 2-isocephem and 2-isooxacephem analogues were prepared from the azetidinone 26.

Synthesis of 3-Methoxy-2-iso-oxacephalosporin

Nitta, Hajime,Hatanaka, Minoru,Ueda, Ikuo

, p. 432 - 433 (2007/10/02)

Optically active 3-methoxy-2-iso-oxacephalosporins are efficiently prepared via intramolecular acylation as a key step.

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