101742-90-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 101742-90-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,1,7,4 and 2 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 101742-90:
(8*1)+(7*0)+(6*1)+(5*7)+(4*4)+(3*2)+(2*9)+(1*0)=89
89 % 10 = 9
So 101742-90-9 is a valid CAS Registry Number.