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20480-53-9

trans-bicyclo<4.3.0>nonan-2-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

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  • 20480-53-9 Structure

  • Basic information

    1. Product Name: trans-bicyclo<4.3.0>nonan-2-one
    2. Synonyms:
    3. CAS NO:20480-53-9
    4. Molecular Formula:
    5. Molecular Weight: 138.21
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 20480-53-9.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: trans-bicyclo<4.3.0>nonan-2-one(CAS DataBase Reference)
    10. NIST Chemistry Reference: trans-bicyclo<4.3.0>nonan-2-one(20480-53-9)
    11. EPA Substance Registry System: trans-bicyclo<4.3.0>nonan-2-one(20480-53-9)

  • 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: 20480-53-9(Hazardous Substances Data)

20480-53-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20480-53-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,4,8 and 0 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 20480-53:
(7*2)+(6*0)+(5*4)+(4*8)+(3*0)+(2*5)+(1*3)=79
79 % 10 = 9
So 20480-53-9 is a valid CAS Registry Number.

20480-53-9Relevant articles and documents

Photochemical and photophysical studies of bicyclo[4.3.0]non-1(6)-en-2-one

Schuster, David I.,Woning, Jan,Kaprinidis, Nikolas A.,Pan, Yanping,Cai, Bing,Barra,Rhodes, Christopher A.

, p. 7029 - 7034 (1992)

The properties of the lowest excited triplet state of bicyclo[4.3.0]non-1 (6)-en-2-one (BNEN) have been investigated by nanosecond transient absorption spectroscopy, photoacoustic calorimetry, measurements of 1O2 quantum yields, and photochemical studies in solution. Both the lifetime (1.4 μs) and the energy (74-76 kcal mol-1) of the BNEN triplet reflect its exceptional conformational rigidity, which prohibits relaxation along the 3(π,π*) potential energy surface by twisting around the C=C bond. Fumaro- and maleonitrile quench the BNEN triplet at a diffusion-controlled rate by triplet energy transfer. This process leads to cis-trans isomerization of the alkenes. The BNEN triplet displays extensive self-quenching with ksq = 2.6 × 107 M-1 s-1. This process involves intermolecular H-abstraction, but formation of dimeric triplet 1,4-biradicals cannot be excluded. The product of the former is a radical (3) with a lifetime of 4.1 μs. Its transient absorption spectrum (λmax 299 nm) is hypsochromically shifted with respect to that of the BNEN triplet (λmax 311 nm). The solvent effects on the photophysical properties suggest that the T1 state of BNEN is a (π,π*) state in acetonitrile and an (n,π*) state in benzene. The BNEN triplet undergoes neither [2 + 2] cycloaddition reactions with itself, cyclopentene, fumaronitrile, or maleonitrile nor the lumiketone rearrangement, but readily abstracts H-atoms from itself, cyclopentene, and 2-propanol.

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