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1(3H)-Isobenzofuranone, 3-methoxy-3-(4-nitrophenyl)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

20656-57-9

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20656-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20656-57-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,6,5 and 6 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 20656-57:
(7*2)+(6*0)+(5*6)+(4*5)+(3*6)+(2*5)+(1*7)=99
99 % 10 = 9
So 20656-57-9 is a valid CAS Registry Number.

20656-57-9Downstream Products

20656-57-9Relevant academic research and scientific papers

Aspects of Tautomerism: Part 14 - Alcoholysis of A-ring Substituted ortho-Benzoylbenzoyl Chlorides: Evidence for Solvent Involvement in Determining Nature of Transition State.

Bhatt, M. Vivekananda,Somayaji, Vishwanatha,Shashidhar, M. S.

, p. 1219 - 1222 (2007/10/02)

Rates of alcoholysis of A-ring substituted o-benzoylbenzoic acid chlorides with 10percent methanol, 10percent ethanol, 50percent isopropanol and 50percent cyclohexanol in acetone medium have been measured.The Hammett ρ-values range from -2.2 to -0.76.These results have been interpreted as evidence for transition states which vary gradually in their degree of charge separation and have features of both SN1 and SN2 reactions.

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