684221-37-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 684221-37-2 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, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 684221-37:
(8*6)+(7*8)+(6*4)+(5*2)+(4*2)+(3*1)+(2*3)+(1*7)=162
162 % 10 = 2
So 684221-37-2 is a valid CAS Registry Number.