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91903-73-0

Ethyl (5,7-dihydroxy-2-oxo-2H-chromen-4-yl)acetate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

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  • 91903-73-0 Structure

  • Basic information

    1. Product Name: Ethyl (5,7-dihydroxy-2-oxo-2H-chromen-4-yl)acetate
    2. Synonyms: Ethyl (5,7-dihydroxy-2-oxo-2H-chromen-4-yl)acetate;ethyl 2-(5,7-dihydroxy-2-oxo-2H-chromen-4-yl)acetate
    3. CAS NO:91903-73-0
    4. Molecular Formula: C13H12O6
    5. Molecular Weight: 264.23078
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 91903-73-0.mol

  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: N/A
    3. Flash Point: N/A
    4. Appearance: /
    5. Density: N/A
    6. Refractive Index: N/A
    7. Storage Temp.: N/A
    8. Solubility: N/A
    9. CAS DataBase Reference: Ethyl (5,7-dihydroxy-2-oxo-2H-chromen-4-yl)acetate(CAS DataBase Reference)
    10. NIST Chemistry Reference: Ethyl (5,7-dihydroxy-2-oxo-2H-chromen-4-yl)acetate(91903-73-0)
    11. EPA Substance Registry System: Ethyl (5,7-dihydroxy-2-oxo-2H-chromen-4-yl)acetate(91903-73-0)

  • Safety Data

    1. Hazard Codes: N/A
    2. Statements: N/A
    3. Safety Statements: N/A
    4. WGK Germany:
    5. RTECS:
    6. HazardClass: IRRITANT
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 91903-73-0(Hazardous Substances Data)

91903-73-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91903-73-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,9,0 and 3 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 91903-73:
(7*9)+(6*1)+(5*9)+(4*0)+(3*3)+(2*7)+(1*3)=140
140 % 10 = 0
So 91903-73-0 is a valid CAS Registry Number.

91903-73-0Downstream Products

91903-73-0Relevant articles and documents

KAl(SO4)2·12H2O (alum) a reusable catalyst for the synthesis of some 4-substituted coumarins via Pechmann reaction under solvent-free conditions

Azizian, Javad,Mohammadi, Ali A.,Bidar, Ilyar,Mirzaei, Peiman

experimental part, p. 805 - 808 (2009/09/25)

A simple, efficient, and practical procedure for the Pechmann condensation using KAl(SO4)2·12H2O (alum) as a non-toxic, reusable, inexpensive, and easily available catalyst is described under solvent-free condition at 65°C. These improved reaction conditions allow the preparation of a wide variety of some new substituted coumarins in high yields (86-96%) and purity under mild reaction conditions. Compared to the classical Pechmann condensation, this new method consistently has the advantage of high yields.

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