The CAS Registry Mumber 84669-02-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,6,6 and 9 respectively; the second part has 2 digits, 0 and 2 respectively. Calculate Digit Verification of CAS Registry Number 84669-02: (7*8)+(6*4)+(5*6)+(4*6)+(3*9)+(2*0)+(1*2)=163 163 % 10 = 3 So 84669-02-3 is a valid CAS Registry Number.
Reactions of heterocycles containing a 2-acyl-propenone structure, II: pyrido[2,3-d]pyrimidines from 4-oxo-4H-chromene-3-carbaldehydes and 4-aminouraciles
Heber
, p. 55 - 62 (2007/10/02)
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