187971-25-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 187971-25-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,9,7 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 187971-25:
(8*1)+(7*8)+(6*7)+(5*9)+(4*7)+(3*1)+(2*2)+(1*5)=191
191 % 10 = 1
So 187971-25-1 is a valid CAS Registry Number.