21152-99-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21152-99-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,1,5 and 2 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 21152-99:
(7*2)+(6*1)+(5*1)+(4*5)+(3*2)+(2*9)+(1*9)=78
78 % 10 = 8
So 21152-99-8 is a valid CAS Registry Number.