1690331-06-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1690331-06-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,9,0,3,3 and 1 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1690331-06:
(9*1)+(8*6)+(7*9)+(6*0)+(5*3)+(4*3)+(3*1)+(2*0)+(1*6)=156
156 % 10 = 6
So 1690331-06-6 is a valid CAS Registry Number.