1391978-64-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1391978-64-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,9,1,9,7 and 8 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1391978-64:
(9*1)+(8*3)+(7*9)+(6*1)+(5*9)+(4*7)+(3*8)+(2*6)+(1*4)=215
215 % 10 = 5
So 1391978-64-5 is a valid CAS Registry Number.