212137-44-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 212137-44-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,2,1,3 and 7 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 212137-44:
(8*2)+(7*1)+(6*2)+(5*1)+(4*3)+(3*7)+(2*4)+(1*4)=85
85 % 10 = 5
So 212137-44-5 is a valid CAS Registry Number.