49541-81-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 49541-81-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,9,5,4 and 1 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 49541-81:
(7*4)+(6*9)+(5*5)+(4*4)+(3*1)+(2*8)+(1*1)=143
143 % 10 = 3
So 49541-81-3 is a valid CAS Registry Number.