diethyl 4-oxo-2-thioxo-1,2,3,4,5,6,7,8-octahydropyrido[4',3':4,5]thieno[2,3-d]pyrimidine-7-carboxylate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 258330-07-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,8,3,3 and 0 respectively; the second part has 2 digits, 0 and 7 respectively. Calculate Digit Verification of CAS Registry Number 258330-07: (8*2)+(7*5)+(6*8)+(5*3)+(4*3)+(3*0)+(2*0)+(1*7)=133 133 % 10 = 3 So 258330-07-3 is a valid CAS Registry Number.