21136-75-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21136-75-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,1,3 and 6 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 21136-75:
(7*2)+(6*1)+(5*1)+(4*3)+(3*6)+(2*7)+(1*5)=74
74 % 10 = 4
So 21136-75-4 is a valid CAS Registry Number.