141424-23-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 141424-23-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,4,2 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 141424-23:
(8*1)+(7*4)+(6*1)+(5*4)+(4*2)+(3*4)+(2*2)+(1*3)=89
89 % 10 = 9
So 141424-23-9 is a valid CAS Registry Number.
141424-23-9Relevant academic research and scientific papers
New thieno compounds. Part 12
Pech,Eisenacher Th.,Bohm
, p. 20 - 21 (2007/10/02)
Starting from esters of 3,4-dihydro-4-oxothieno[2,3-d]pyrimidin-2-ylacetic acid the corresponding 4-chloro derivatives were prepared by treatment with phosphoroxychlorid. These compounds can be derived with amines. In this way the 4-amino substituted thie
