1377321-99-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1377321-99-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,7,3,2 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1377321-99:
(9*1)+(8*3)+(7*7)+(6*7)+(5*3)+(4*2)+(3*1)+(2*9)+(1*9)=177
177 % 10 = 7
So 1377321-99-7 is a valid CAS Registry Number.