690990-79-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 690990-79-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,0,9,9 and 0 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 690990-79:
(8*6)+(7*9)+(6*0)+(5*9)+(4*9)+(3*0)+(2*7)+(1*9)=215
215 % 10 = 5
So 690990-79-5 is a valid CAS Registry Number.