61771-19-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 61771-19-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,7,7 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 61771-19:
(7*6)+(6*1)+(5*7)+(4*7)+(3*1)+(2*1)+(1*9)=125
125 % 10 = 5
So 61771-19-5 is a valid CAS Registry Number.