1556776-72-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1556776-72-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,5,6,7,7 and 6 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1556776-72:
(9*1)+(8*5)+(7*5)+(6*6)+(5*7)+(4*7)+(3*6)+(2*7)+(1*2)=217
217 % 10 = 7
So 1556776-72-7 is a valid CAS Registry Number.