781658-58-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 781658-58-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,8,1,6,5 and 8 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 781658-58:
(8*7)+(7*8)+(6*1)+(5*6)+(4*5)+(3*8)+(2*5)+(1*8)=210
210 % 10 = 0
So 781658-58-0 is a valid CAS Registry Number.