857780-67-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 857780-67-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,7,8 and 0 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 857780-67:
(8*8)+(7*5)+(6*7)+(5*7)+(4*8)+(3*0)+(2*6)+(1*7)=227
227 % 10 = 7
So 857780-67-7 is a valid CAS Registry Number.