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1256961-44-0

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1256961-44-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1256961-44-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,6,9,6 and 1 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1256961-44:
(9*1)+(8*2)+(7*5)+(6*6)+(5*9)+(4*6)+(3*1)+(2*4)+(1*4)=180
180 % 10 = 0
So 1256961-44-0 is a valid CAS Registry Number.

1256961-44-0Downstream Products

1256961-44-0Relevant articles and documents

New and facile approach for the synthesis of (E)-α,β-unsaturated esters and ketones

China Raju, Bhimapaka,Suman, Pathi

, p. 11840 - 11842 (2010)

A general and practical synthesis of (E)-α,β-unsaturated esters and ketones was achieved by the reaction of carbonyl compounds with ethyl-4,4,4-trifluoroacetoacetate and trifluoro-substituted 1,3-diketones in the presence of piperidine in dichloromethane at raoom temperature (≈40°C) with excellent stereoselectivity (see scheme).

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