21581-36-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21581-36-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,5,8 and 1 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 21581-36:
(7*2)+(6*1)+(5*5)+(4*8)+(3*1)+(2*3)+(1*6)=92
92 % 10 = 2
So 21581-36-2 is a valid CAS Registry Number.