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694473-31-9

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694473-31-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 694473-31-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,4,4,7 and 3 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 694473-31:
(8*6)+(7*9)+(6*4)+(5*4)+(4*7)+(3*3)+(2*3)+(1*1)=199
199 % 10 = 9
So 694473-31-9 is a valid CAS Registry Number.

694473-31-9Downstream Products

694473-31-9Relevant articles and documents

A new approach for pyrophosphate bond formation starting from phosphoramidite derivatives by use of 6-trifluoromethyl-1-hydroxybenzotriazole- mediated O-N phosphoryl migration

Ohkubo, Akihiro,Aoki, Katsufumi,Seio, Kohji,Sekine, Mitsuo

, p. 979 - 982 (2004)

A new method for pyrophosphate bond formation in the solid phase was developed by use of phosphoramidite derivatives, which were found to be readily converted by reaction with 6-trifluoromethyl-1-hydroxybenztriazole via an O-N phosphoryl rearrangement into pentavalent phosphotriester intermediates. These intermediates proved to react smoothly with not only phosphomonoesters but also phosphodiesters to give protected pyrophosphate derivatives which, in turn, could be easily deprotected to give the desired pyrophosphate derivatives.

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