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1243679-37-9

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1243679-37-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1243679-37-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,3,6,7 and 9 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1243679-37:
(9*1)+(8*2)+(7*4)+(6*3)+(5*6)+(4*7)+(3*9)+(2*3)+(1*7)=169
169 % 10 = 9
So 1243679-37-9 is a valid CAS Registry Number.

1243679-37-9Downstream Products

1243679-37-9Relevant academic research and scientific papers

A short practical approach to 24R,25-dihydroxyvitamin D3

Nicoletti, Daniel,Gregorio, Carlos,Mourino, Antonio,Maestro, Miguel

, p. 43 - 45 (2010)

A synthesis of the vitamin D3 metabolite 24R,25-dihydroxyvitamin D3 (1) by Lythgoe's Wittig-Horner approach is described. The key step of the synthesis is the stereocontrolled introduction of the 24-hydroxyl group by a palladium(0)-induced [3,3]-sigmatropic rearrangement on a 22R-allylic acetate (7).

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