690645-97-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 690645-97-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,0,6,4 and 5 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 690645-97:
(8*6)+(7*9)+(6*0)+(5*6)+(4*4)+(3*5)+(2*9)+(1*7)=197
197 % 10 = 7
So 690645-97-7 is a valid CAS Registry Number.