215720-34-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 215720-34-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,5,7,2 and 0 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 215720-34:
(8*2)+(7*1)+(6*5)+(5*7)+(4*2)+(3*0)+(2*3)+(1*4)=106
106 % 10 = 6
So 215720-34-6 is a valid CAS Registry Number.