684221-23-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 684221-23-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,4,2,2 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 684221-23:
(8*6)+(7*8)+(6*4)+(5*2)+(4*2)+(3*1)+(2*2)+(1*3)=156
156 % 10 = 6
So 684221-23-6 is a valid CAS Registry Number.