19977-30-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19977-30-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,9,7 and 7 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 19977-30:
(7*1)+(6*9)+(5*9)+(4*7)+(3*7)+(2*3)+(1*0)=161
161 % 10 = 1
So 19977-30-1 is a valid CAS Registry Number.