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1244956-03-3

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1244956-03-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1244956-03-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,4,9,5 and 6 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1244956-03:
(9*1)+(8*2)+(7*4)+(6*4)+(5*9)+(4*5)+(3*6)+(2*0)+(1*3)=163
163 % 10 = 3
So 1244956-03-3 is a valid CAS Registry Number.

1244956-03-3Downstream Products

1244956-03-3Relevant articles and documents

Nitrile assisted, Bronsted acid catalyzed regio and stereoselective diarylphosphonylation of allyl silyl ethers

Ho, Chun-Yu,Chan, Chun-Wa,Wo, Siu-Kwan,Zuo, Zhong,Chan, Lai-Ying

supporting information; experimental part, p. 3480 - 3487 (2010/08/21)

We have discovered a mild, catalytic protocol for the regio- and stereoselective synthesis of trisubstituted allyl diarylphosphonates from the corresponding disubstituted allyl silyl ethers, circumventing the challenges related to the preparation and availability of stereodefined trisubstituted olefins. A closely related arylation reaction was also discovered during the methodology development. By simply switching the reaction medium, high phosphonylation/arylation ratios and vice versa can be achieved. This may not be a direct result of changing solvent polarity. The allyl diarylphosphonates were evaluated as carboxylesterase inhibitors, and the screening results revealed that the inhibitory efficiency is highly related to the choice of alkenes and aryl substituents. The Royal Society of Chemistry 2010.

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