691007-83-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 691007-83-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,1,0,0 and 7 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 691007-83:
(8*6)+(7*9)+(6*1)+(5*0)+(4*0)+(3*7)+(2*8)+(1*3)=157
157 % 10 = 7
So 691007-83-7 is a valid CAS Registry Number.