3-acetylamino-4,5-dimethoxy-benzoic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 871892-91-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,1,8,9 and 2 respectively; the second part has 2 digits, 9 and 1 respectively. Calculate Digit Verification of CAS Registry Number 871892-91: (8*8)+(7*7)+(6*1)+(5*8)+(4*9)+(3*2)+(2*9)+(1*1)=220 220 % 10 = 0 So 871892-91-0 is a valid CAS Registry Number.