8-amino-6-bromo-4-oxo-4H-chromene-2-carboxylic acid ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 156904-82-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,9,0 and 4 respectively; the second part has 2 digits, 8 and 2 respectively. Calculate Digit Verification of CAS Registry Number 156904-82: (8*1)+(7*5)+(6*6)+(5*9)+(4*0)+(3*4)+(2*8)+(1*2)=154 154 % 10 = 4 So 156904-82-4 is a valid CAS Registry Number.