3771-34-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3771-34-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,7,7 and 1 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3771-34:
(6*3)+(5*7)+(4*7)+(3*1)+(2*3)+(1*4)=94
94 % 10 = 4
So 3771-34-4 is a valid CAS Registry Number.