1239771-67-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1239771-67-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,9,7,7 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1239771-67:
(9*1)+(8*2)+(7*3)+(6*9)+(5*7)+(4*7)+(3*1)+(2*6)+(1*7)=185
185 % 10 = 5
So 1239771-67-5 is a valid CAS Registry Number.