1236458-57-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1236458-57-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,6,4,5 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1236458-57:
(9*1)+(8*2)+(7*3)+(6*6)+(5*4)+(4*5)+(3*8)+(2*5)+(1*7)=163
163 % 10 = 3
So 1236458-57-3 is a valid CAS Registry Number.