111658-13-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 111658-13-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,6,5 and 8 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 111658-13:
(8*1)+(7*1)+(6*1)+(5*6)+(4*5)+(3*8)+(2*1)+(1*3)=100
100 % 10 = 0
So 111658-13-0 is a valid CAS Registry Number.
111658-13-0Relevant articles and documents
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