71906-93-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71906-93-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,9,0 and 6 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 71906-93:
(7*7)+(6*1)+(5*9)+(4*0)+(3*6)+(2*9)+(1*3)=139
139 % 10 = 9
So 71906-93-9 is a valid CAS Registry Number.