671789-92-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 671789-92-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,1,7,8 and 9 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 671789-92:
(8*6)+(7*7)+(6*1)+(5*7)+(4*8)+(3*9)+(2*9)+(1*2)=217
217 % 10 = 7
So 671789-92-7 is a valid CAS Registry Number.