3-amino-1,2,3,4,5,6,7,8-octahydro-2,4-dioxopyrido[3',4',4,5]thieno[2,3-d]pyrimidine-7-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 853896-52-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,3,8,9 and 6 respectively; the second part has 2 digits, 5 and 2 respectively. Calculate Digit Verification of CAS Registry Number 853896-52: (8*8)+(7*5)+(6*3)+(5*8)+(4*9)+(3*6)+(2*5)+(1*2)=223 223 % 10 = 3 So 853896-52-3 is a valid CAS Registry Number.