1623789-42-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1623789-42-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,3,7,8 and 9 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1623789-42:
(9*1)+(8*6)+(7*2)+(6*3)+(5*7)+(4*8)+(3*9)+(2*4)+(1*2)=193
193 % 10 = 3
So 1623789-42-3 is a valid CAS Registry Number.