21852-74-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21852-74-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,5 and 2 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 21852-74:
(7*2)+(6*1)+(5*8)+(4*5)+(3*2)+(2*7)+(1*4)=104
104 % 10 = 4
So 21852-74-4 is a valid CAS Registry Number.