1684427-19-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1684427-19-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,8,4,4,2 and 7 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1684427-19:
(9*1)+(8*6)+(7*8)+(6*4)+(5*4)+(4*2)+(3*7)+(2*1)+(1*9)=197
197 % 10 = 7
So 1684427-19-7 is a valid CAS Registry Number.