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103208-71-5

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103208-71-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 103208-71-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,2,0 and 8 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 103208-71:
(8*1)+(7*0)+(6*3)+(5*2)+(4*0)+(3*8)+(2*7)+(1*1)=75
75 % 10 = 5
So 103208-71-5 is a valid CAS Registry Number.

103208-71-5Downstream Products

103208-71-5Relevant articles and documents

INVESTIGATIONS ON STEROIDAL SPIRO LACTONES

Solyom, Sandor,Toldy, Lajos

, p. 23 - 28 (2007/10/02)

Two 17-spirolactone derivates were converted into the 7-oxo compounds via allylic oxidation, then the 3β-acetoxy group was eliminated.By means of dimethyl-sulfoxonium methylide a methylene group and with thioacetic acid a thioacetyl group was attached via addition onto the new double bond.Among the new spirolactones structual isomers of Spironolactone, Canrenone and Prorenone can also be found.

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