1293987-55-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1293987-55-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,9,3,9,8 and 7 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1293987-55:
(9*1)+(8*2)+(7*9)+(6*3)+(5*9)+(4*8)+(3*7)+(2*5)+(1*5)=219
219 % 10 = 9
So 1293987-55-9 is a valid CAS Registry Number.