690646-67-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 690646-67-4 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 6 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 690646-67:
(8*6)+(7*9)+(6*0)+(5*6)+(4*4)+(3*6)+(2*6)+(1*7)=194
194 % 10 = 4
So 690646-67-4 is a valid CAS Registry Number.