873544-81-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 873544-81-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,3,5,4 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 873544-81:
(8*8)+(7*7)+(6*3)+(5*5)+(4*4)+(3*4)+(2*8)+(1*1)=201
201 % 10 = 1
So 873544-81-1 is a valid CAS Registry Number.
873544-81-1Relevant academic research and scientific papers
Synthesis of N-aryl-2-amino-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6- carboxamides
Tumkevicius,Dailide
, p. 1305 - 1310 (2007/10/03)
Synthetic routes for the preparation of methyl 2-amino-4-methoxythieno[2,3- d]pyrimidine-6-carboxylate (4) - useful intermediate for lipophilic and classical antifolates from 2-amino-4,6-dichloropyrimidine-5-carbaldehyde (1) have been studied. It has been
