1780776-61-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1780776-61-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,7,8,0,7,7 and 6 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1780776-61:
(9*1)+(8*7)+(7*8)+(6*0)+(5*7)+(4*7)+(3*6)+(2*6)+(1*1)=215
215 % 10 = 5
So 1780776-61-5 is a valid CAS Registry Number.