The CAS Registry Mumber 80108-77-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,1,0 and 8 respectively; the second part has 2 digits, 7 and 7 respectively. Calculate Digit Verification of CAS Registry Number 80108-77: (7*8)+(6*0)+(5*1)+(4*0)+(3*8)+(2*7)+(1*7)=106 106 % 10 = 6 So 80108-77-6 is a valid CAS Registry Number.
SILYLSTEROIDS III. SYNTHESIS OF 2- AND 4-(TRIMETHYLSILYL)ESTRADIOLS AND THEIR DERIVATIVES
Golubovskaya, L. E.,Rzheznikov, V. M.,Zontova, V. N.,Pivnitskii, K. K.
, p. 1072 - 1080 (2007/10/02)
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