861777-43-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 861777-43-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,6,1,7,7 and 7 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 861777-43:
(8*8)+(7*6)+(6*1)+(5*7)+(4*7)+(3*7)+(2*4)+(1*3)=207
207 % 10 = 7
So 861777-43-7 is a valid CAS Registry Number.