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CAS

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143237-03-0

5-(4-Methoxy-phenyl)-2,3-dimethyl-5-oxo-pentanoic acid tert-butyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

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  • 143237-03-0 Structure

  • Basic information

    1. Product Name: 5-(4-Methoxy-phenyl)-2,3-dimethyl-5-oxo-pentanoic acid tert-butyl ester
    2. Synonyms:
    3. CAS NO:143237-03-0
    4. Molecular Formula:
    5. Molecular Weight: 306.402
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 143237-03-0.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: 5-(4-Methoxy-phenyl)-2,3-dimethyl-5-oxo-pentanoic acid tert-butyl ester(CAS DataBase Reference)
    10. NIST Chemistry Reference: 5-(4-Methoxy-phenyl)-2,3-dimethyl-5-oxo-pentanoic acid tert-butyl ester(143237-03-0)
    11. EPA Substance Registry System: 5-(4-Methoxy-phenyl)-2,3-dimethyl-5-oxo-pentanoic acid tert-butyl ester(143237-03-0)

  • 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: 143237-03-0(Hazardous Substances Data)

143237-03-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143237-03-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,2,3 and 7 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 143237-03:
(8*1)+(7*4)+(6*3)+(5*2)+(4*3)+(3*7)+(2*0)+(1*3)=100
100 % 10 = 0
So 143237-03-0 is a valid CAS Registry Number.

143237-03-0Downstream Products

143237-03-0Relevant articles and documents

The design of diastereoselective Mukaiyama-Michael reaction of ketene silyl acetal

Otera, Junzo,Fujita, Yukihiro,Fukuzumi, Shunichi

, p. 9409 - 9418 (1996)

The highly diastereoselective Mukaiyama-Michael reaction has been designed. Suppression of an electron-transfer process is crucial for this purpose and the following conditions should be satisfied. (1) TiCl4 is employed as a Lewis acid. (2) Ketene silyl acetals have bulky siloxy and/or alkoxy group(s). (3) α-Enones have a bulky acyl group. The excellent syn- selectivity up to a 99:1 ratio is attained under these conditions. The selectivity is reversed to the anti-preference upon decreasing the size of the alkoxy group.

How Can High Diastereoselectivity Be Attained in the Michael Addition of Ketene Silyl Acetals?

Otera, Junzo,Fujita, Yukihiro,Sato, Tsuneo,Nozaki, Hitosi,Fukuzumi, Shunichi,Fujita, Morifumi

, p. 5054 - 5055 (2007/10/02)

Criteria for attaining high diastereoselectivity in the title reaction are elucidated in terms of suppressing an electron-transfer process.

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