3956-74-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3956-74-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,9,5 and 6 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3956-74:
(6*3)+(5*9)+(4*5)+(3*6)+(2*7)+(1*4)=119
119 % 10 = 9
So 3956-74-9 is a valid CAS Registry Number.