1309233-77-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1309233-77-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,0,9,2,3 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1309233-77:
(9*1)+(8*3)+(7*0)+(6*9)+(5*2)+(4*3)+(3*3)+(2*7)+(1*7)=139
139 % 10 = 9
So 1309233-77-9 is a valid CAS Registry Number.