1421708-58-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1421708-58-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,1,7,0 and 8 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1421708-58:
(9*1)+(8*4)+(7*2)+(6*1)+(5*7)+(4*0)+(3*8)+(2*5)+(1*8)=138
138 % 10 = 8
So 1421708-58-8 is a valid CAS Registry Number.