21906-15-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21906-15-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,0 and 6 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 21906-15:
(7*2)+(6*1)+(5*9)+(4*0)+(3*6)+(2*1)+(1*5)=90
90 % 10 = 0
So 21906-15-0 is a valid CAS Registry Number.