137804-82-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137804-82-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,8,0 and 4 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 137804-82:
(8*1)+(7*3)+(6*7)+(5*8)+(4*0)+(3*4)+(2*8)+(1*2)=141
141 % 10 = 1
So 137804-82-1 is a valid CAS Registry Number.