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129908-91-4

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129908-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129908-91-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,9,0 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 129908-91:
(8*1)+(7*2)+(6*9)+(5*9)+(4*0)+(3*8)+(2*9)+(1*1)=164
164 % 10 = 4
So 129908-91-4 is a valid CAS Registry Number.

129908-91-4Relevant articles and documents

Synthesis of steroidal pyrimidines

Rapole, Keshava R.,Siddiqui,Dayal,Batta,Rao,Kumar,Salen

, p. 3511 - 3515 (1996)

Selected aryl aldehydes were treated with 17-oxo-5-androsten-3β-yl acetate (I) to give the corresponding 16-arylidene 17-oxo-5-androsten-3β-yl acetates (IIa-e). Condensation of these chalcones with urea revealed the formation of the corresponding substituted pyrimidin-2'-ones (IIIa-e) respectively.

Schmidt reaction of steroidal chalcones and Beckmann reaction of the corresponding ketoximes

Siddiqui,Memeriani,Ramesh,Siddiqui,Rao

, p. 39 - 42 (2007/10/02)

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