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1649-96-3

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1649-96-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1649-96-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,4 and 9 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1649-96:
(6*1)+(5*6)+(4*4)+(3*9)+(2*9)+(1*6)=103
103 % 10 = 3
So 1649-96-3 is a valid CAS Registry Number.

1649-96-3Relevant articles and documents

DMF Dimethyl Acetal as Carbon Source for α-Methylation of Ketones: A Hydrogenation-Hydrogenolysis Strategy of Enaminones

Borah, Ashwini,Goswami, Limi,Neog, Kashmiri,Gogoi, Pranjal

, p. 4722 - 4728 (2015/05/13)

A novel heterogeneous catalytic hydrogenation-hydrogenolysis strategy has been developed for the α-methylation of ketones via enaminones using DMF dimethyl acetal as carbon source. This strategy provides a very convenient route to α-methylated ketones using a variety of ketones without any base or oxidant. (Chemical Equation Presented).

PYRAZOLONE DERIVATIVE AND PDE INHIBITOR CONTAINING THE SAME AS ACTIVE INGREDIENT

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Page/Page column 115, (2010/04/25)

It is to provide a novel pyrazolone derivative represented by the following general formula (1), which is useful as a pharmaceutical and has a phosphodiesterase inhibitory action: wherein R1,R2: C1-6 alkyl; R3,R4: H, X, C1-6 alkoxy; Z:O, S; A:AA, BB, wherein AA represents wherein BB represents wherein R5: H, C1-6 alkyl ; R6,R7: C1-6 alkyl.

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