372109-31-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 372109-31-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,7,2,1,0 and 9 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 372109-31:
(8*3)+(7*7)+(6*2)+(5*1)+(4*0)+(3*9)+(2*3)+(1*1)=124
124 % 10 = 4
So 372109-31-4 is a valid CAS Registry Number.