1631747-93-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1631747-93-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,1,7,4 and 7 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1631747-93:
(9*1)+(8*6)+(7*3)+(6*1)+(5*7)+(4*4)+(3*7)+(2*9)+(1*3)=177
177 % 10 = 7
So 1631747-93-7 is a valid CAS Registry Number.