1682655-57-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1682655-57-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,8,2,6,5 and 5 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1682655-57:
(9*1)+(8*6)+(7*8)+(6*2)+(5*6)+(4*5)+(3*5)+(2*5)+(1*7)=207
207 % 10 = 7
So 1682655-57-7 is a valid CAS Registry Number.