2138198-49-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2138198-49-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 2,1,3,8,1,9 and 8 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 2138198-49:
(9*2)+(8*1)+(7*3)+(6*8)+(5*1)+(4*9)+(3*8)+(2*4)+(1*9)=177
177 % 10 = 7
So 2138198-49-7 is a valid CAS Registry Number.