1810074-91-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1810074-91-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,8,1,0,0,7 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1810074-91:
(9*1)+(8*8)+(7*1)+(6*0)+(5*0)+(4*7)+(3*4)+(2*9)+(1*1)=139
139 % 10 = 9
So 1810074-91-9 is a valid CAS Registry Number.