212143-41-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 212143-41-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,2,1,4 and 3 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 212143-41:
(8*2)+(7*1)+(6*2)+(5*1)+(4*4)+(3*3)+(2*4)+(1*1)=74
74 % 10 = 4
So 212143-41-4 is a valid CAS Registry Number.