Acetamide, N-(4-hydroxy-2-nitro-1-naphthalenyl)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 685143-09-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,5,1,4 and 3 respectively; the second part has 2 digits, 0 and 9 respectively. Calculate Digit Verification of CAS Registry Number 685143-09: (8*6)+(7*8)+(6*5)+(5*1)+(4*4)+(3*3)+(2*0)+(1*9)=173 173 % 10 = 3 So 685143-09-3 is a valid CAS Registry Number.