4-ethylamino-3-nitro-benzophenone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 111205-73-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,2,0 and 5 respectively; the second part has 2 digits, 7 and 3 respectively. Calculate Digit Verification of CAS Registry Number 111205-73: (8*1)+(7*1)+(6*1)+(5*2)+(4*0)+(3*5)+(2*7)+(1*3)=63 63 % 10 = 3 So 111205-73-3 is a valid CAS Registry Number.