A PHP Error was encountered

Severity: Warning

Message: file_get_contents(https://...@pubfacts.com&api_key=b8daa3ad693db53b1410957c26c9a51b4908&a=1): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests

Filename: helpers/my_audit_helper.php

Line Number: 176

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 176
Function: file_get_contents

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 250
Function: simplexml_load_file_from_url

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3122
Function: getPubMedXML

File: /var/www/html/application/controllers/Detail.php
Line: 575
Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 489
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 316
Function: require_once

Di-tert-butyl 3,3'-(2,2'-bi-1H-imidazole-1,1'-di-yl)dipropanoate. | LitMetric

Di-tert-butyl 3,3'-(2,2'-bi-1H-imidazole-1,1'-di-yl)dipropanoate.

Acta Crystallogr Sect E Struct Rep Online

State Key Laboratory Base of Novel Functional Materials, and Preparation Science, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, People's Republic of China.

Published: June 2009

In the title compound, C(20)H(20)N(4)O(4), the complete molecule is generated by a crystallographic centre of symmetry. The conformation is stabilized by two intramolecular C-H⋯N links.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2969301PMC
http://dx.doi.org/10.1107/S1600536809021369DOI Listing

Publication Analysis

Top Keywords

di-tert-butyl 33'-22'-bi-1h-imidazole-11'-di-yldipropanoate
4
33'-22'-bi-1h-imidazole-11'-di-yldipropanoate title
4
title compound
4
compound c20h20n4o4
4
c20h20n4o4 complete
4
complete molecule
4
molecule generated
4
generated crystallographic
4
crystallographic centre
4
centre symmetry
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!