Case study: Identification and characterization of N ‐[2‐(dimethylamino)cyclohexyl]‐ N ‐methylnaphthalene‐2‐carboxamide, a regioisomer of the synthetic opioid U10

Autor: Lecinda Collins-Brown, Stephen Davies, Brendan Trotter, Benjamin Chan, Karen Blakey, David Brown, Michael Collins, Michael Moawad

Publikováno v: Drug Testing and Analysis. 14:188-195

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3466b931c50f4f33024f00dce80fd56d
https://doi.org/10.1002/dta.3133

Mass fraction assignment of Bisphenol-A high purity material

Autor: Steven Westwood, Gustavo Martos, Ralf Josephs, Tiphaine Choteau, Robert Wielgosz, Stephen Davies, Michael Moawad, Greg Tarrant, Benjamin Chan, Mahiuddin Alamgir, Eliane de Rego, Wagner Wollinger, Bruno Garrido, Jane Fernandes, Rodrigo de Sena, Rodrigo Oliveira, Jeremy Melanson, Jennifer Bates, Phuong Mai Le, Juris Meija, Can Quan, Ting Huang, Wei Zhang, Ruian Ma, Shaofeng Zhang, Yuan Hao, Yaiuan He, Shanjun Song, Haifeng Wang, Fuhai Su, Tianji Zhang, Hongmei Li, Wai-hing Lam, Wai-fun Wong, Wai-hong Fung, Rosemarie Philipp, Ute Dorgerloh, Klas Meyer, Christian Piechotta, Juliane Riedel, Tanja Westphalen, P Giannikopoulou, Ch Alexopoulos, E Kakoulides, Yuko Kitamaki, Taichi Yamazaki, Yoshitaka Shimizu, Miho Kuroe, Masahiko Numata, Alejanro Pérez-Castorena, Miryan Balderas-Escamilla, Judith Garcia-Escalante, Anatoliy Krylov, Alena Mikheeva, Mikhail Beliakov, Marina Palagina, Irina Tkachenko, Sergey Spirin, Vadim Smirnov, Teo Tang Lin, Cheow Pui Sze, Wang Juan, Wong Lingkai, Lu Ting, Liu Qinde, Chen Yizhao, Sim Lay Peng, Maria Fernandes-Whaley, Des Prevoo-Franzsen, Laura Quinn, Nontete Nhlapo, Dennis Mkhize, Dominique Marajh, Sabelo Chamane, Seonghee Ahn, Kiwhan Choi, Sunyoung Lee, Jeesoo Han, Song-Yee Baek, Byungjoo Kim, Sornkrit Marbumrung, Pornnipa Jongmesuk, Kittiya Shearman, Cheerapa Boonyakong, Mine Bilsel, Simay Gündüz, Ilker Ün, Hasibe Yilmaz, Gökhan Bilsel, Taner Gökçen, Cailean Clarkson, John Warren, Eli Achtar

Publikováno v: Metrologia. 58:08015

Main text The CCQM-K148.a comparison was coordinated by the BIPM on behalf of the CCQM Organic Analysis Working Group for NMIs and DIs which provide measurement services in organic analysis under the CIPM MRA. It was undertaken as a "Track A" compari

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4c93cfb9ddec54e67deae13ff0c3fafc
https://doi.org/10.1088/0026-1394/58/1a/08015

Purity assessment of organic calibration standards using a combination of quantitative NMR and mass balance

Autor: Gregory J. Tarrant, Michael Moawad, Yawen Luo, James M. Hook, Stephen Davies, Kai Jones, Maya R. Krishnaswami, Cecile Elgindy, Mahiuddin Alamgir, Douglas J. Lawes, Anna M. Goldys, Benjamin K. H. Chan, Peter S. R. Mitchell

Publikováno v: Analytical and Bioanalytical Chemistry. 407:3103-3113

Quantitative NMR spectroscopy (qNMR) has been examined for purity assessment using a range of organic calibration standards of varying structural complexities, certified using the traditional mass balance approach. Demonstrated equivalence between th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1834539f89135a49efe57598a83b4c6c
https://doi.org/10.1007/s00216-014-7893-6

The development of an efficient mass balance approach for the purity assignment of organic calibration standards

Autor: Benjamin K. H. Chan, Greg J. Tarrant, Thao Dang, Yawen Luo, Mahiuddin Alamgir, Stephen Davies, Maya R. Krishnaswami, Michael Moawad, Kai Jones, Peter S. R. Mitchell, Hilton Swan

Publikováno v: Analytical and bioanalytical chemistry. 407(26)

The purity determination of organic calibration standards using the traditional mass balance approach is described. Demonstrated examples highlight the potential for bias in each measurement and the need to implement an approach that provides a cross

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dea9f6c6fa2562a5b500f24c707edad9
https://pubmed.ncbi.nlm.nih.gov/26342310

Simultaneous determination of eight sympathomimetic amines in urine by gas chromatography/mass spectrometry

Autor: Michael, Moawad, Cheang S, Khoo, Samiuela, Lee, James R, Hennell

Publikováno v: Journal of AOAC International. 93(1)

A GC method was developed for the identification and quantitation of eight sympathomimetic amines in urine, i.e., amphetamine, methamphetamine, mephentermine, ephedrine, pseudoephedrine, methylenedioxyamphetamine, methylenedioxymethamphetamine, and m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::b460787366cf21749f1a2d15b2b9dd54
https://pubmed.ncbi.nlm.nih.gov/20334173