1767-69-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1767-69-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,6 and 7 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1767-69:
(6*1)+(5*7)+(4*6)+(3*7)+(2*6)+(1*9)=107
107 % 10 = 7
So 1767-69-7 is a valid CAS Registry Number.