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72277-20-4

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72277-20-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 72277-20-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,2,7 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 72277-20:
(7*7)+(6*2)+(5*2)+(4*7)+(3*7)+(2*2)+(1*0)=124
124 % 10 = 4
So 72277-20-4 is a valid CAS Registry Number.

72277-20-4Downstream Products

72277-20-4Relevant articles and documents

Silyl Phosphites. XVIII. Versatile Utility of α-(Trimethylsilyloxy)-alkylphosphonates as Key Intermediates for Transformation of Aldehydes into Several Carbonyl Derivatives

Sekine, Mitsuo,Nakajima, Masashi,Kume, Akiko,Hashizume, Akio,Hata, Tsujiaki

, p. 224 - 238 (2007/10/02)

Carbonyl addition compounds of diethyl trimethylsilyl phosphite (DTMSP) with aldehydes were converted, by treatment with lithium diisopropylamide (LDA) followed by the successive alkylation and alkaline hydrolysis, to carbonyl derivatives involving aldehydes, unsymmetrical ketones, β,γ-unsaturated ketones, and carboxylic acids. β-Substituted carboxylic esters and γ-substituted lactones were prepared by use of the carbonyl addition compounds of DTMSP with α,β-unsaturated aldehydes.

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