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Development and Validation of a Sensitive GC-MS/MS Method for the Determination of Five Potential Genotoxic Impurities in Abiraterone Acetate.
Zhong Z, Chen Y, Xia H, Chen Z, Cheng Q. Zhong Z, et al. J Chromatogr Sci. 2022 Feb 16;60(2):105-110. doi: 10.1093/chromsci/bmab052. J Chromatogr Sci. 2022. PMID: 34059885
A sensitive and selective gas chromatography-tandem mass spectrometry method was developed for the identification and quantification of five potential genotoxic impurities (PGIs), i.e., chloromethane, 2-chloropropane, 2-bromopropane, 4-chloro-1-butanol and diethyl s …
A sensitive and selective gas chromatography-tandem mass spectrometry method was developed for the identification and quantification of five …
Influence of oil composition on the formation of fatty acid esters of 2-chloropropane-1,3-diol (2-MCPD) and 3-chloropropane-1,2-diol (3-MCPD) under conditions simulating oil refining.
Ermacora A, Hrncirik K. Ermacora A, et al. Food Chem. 2014 Oct 15;161:383-9. doi: 10.1016/j.foodchem.2014.03.130. Epub 2014 Apr 4. Food Chem. 2014. PMID: 24837966
The toxicological relevance and widespread occurrence of fatty acid esters of 2-chloropropane-1,3-diol (2-MCPD) and 3-chloropropane-1,2-diol (3-MCPD) in refined oils and fats have recently triggered an interest in the mechanism of formation and decomposition of thes …
The toxicological relevance and widespread occurrence of fatty acid esters of 2-chloropropane-1,3-diol (2-MCPD) and 3-chloropr …
(1S,2S)-1-Methylamino-1-phenyl-2-chloropropane: Route specific marker impurity of methamphetamine synthesized from ephedrine via chloroephedrine.
Ko BJ, Suh S, Suh YJ, In MK, Kim SH, Kim JH. Ko BJ, et al. Forensic Sci Int. 2012 Sep 10;221(1-3):92-7. doi: 10.1016/j.forsciint.2012.04.008. Epub 2012 May 2. Forensic Sci Int. 2012. PMID: 22554873
Identification of route specific marker impurities of (S)-(+)-methamphetamine can provide us with very useful information for (S)-(+)-methamphetamine abuse criminal investigation. (1S,2S)-(+)-Chloropseudoephedrine and (1R,2S)-(-)-chloroephedrine are well known impurities of (S)-( …
Identification of route specific marker impurities of (S)-(+)-methamphetamine can provide us with very useful information for (S)-(+)-metham …
Mutagenic activity of halogenated propanes and propenes: effect of bromine and chlorine positioning.
Låg M, Omichinski JG, Dybing E, Nelson SD, Søderlund EJ. Låg M, et al. Chem Biol Interact. 1994 Oct;93(1):73-84. doi: 10.1016/0009-2797(94)90087-6. Chem Biol Interact. 1994. PMID: 8069951
The order of mutagenicity was as follows: 1,2,3-tribromopropane > or = 1,2-dibromo- 3-chloropropane > 1,3-dibromo-2-chloropropane > or = 1,3-dichloro-2-bromopropane >> 1-bromo-2,3-dichloropropane > 1,2,3-trichloropropane. ...
The order of mutagenicity was as follows: 1,2,3-tribromopropane > or = 1,2-dibromo- 3-chloropropane > 1,3-dibromo-2-chloropr …
Exploring borderline S(N)1-S(N)2 mechanisms: the role of explicit solvation protocols in the DFT investigation of isopropyl chloride.
de Andrade KN, Peixoto BP, Carneiro JWM, Fiorot RG. de Andrade KN, et al. RSC Adv. 2024 Feb 5;14(7):4692-4701. doi: 10.1039/d4ra00066h. eCollection 2024 Jan 31. RSC Adv. 2024. PMID: 38318615 Free PMC article.
Herein, we investigated the borderline mechanism of the hydrolysis of a secondary substrate, isopropyl chloride ((i)PrCl), at DFT-M06-2X/aug-cc-pVDZ level, employing explicit and explicit + implicit protocols. ...
Herein, we investigated the borderline mechanism of the hydrolysis of a secondary substrate, isopropyl chloride ((i)PrCl), at …
Novel Pyridinium Based Ionic Liquid Promoter for Aqueous Knoevenagel Condensation: Green and Efficient Synthesis of New Derivatives with Their Anticancer Evaluation.
Nayl AA, Arafa WAA, Ahmed IM, Abd-Elhamid AI, El-Fakharany EM, Abdelgawad MA, Gomha SM, Ibrahim HM, Aly AA, Bräse S, Mourad AK. Nayl AA, et al. Molecules. 2022 May 4;27(9):2940. doi: 10.3390/molecules27092940. Molecules. 2022. PMID: 35566291 Free PMC article.
Herein, a distinctive dihydroxy ionic liquid ([Py-2OH]OAc) was straightforwardly assembled from the sonication of pyridine with 2-chloropropane-1,3-diol by employing sodium acetate as an ion exchanger. ...
Herein, a distinctive dihydroxy ionic liquid ([Py-2OH]OAc) was straightforwardly assembled from the sonication of pyridine with 2- …
Oxidation of Isopropylcyclopropane by Chromyl Chloride: Ring-Opened Products Support a Hydrogen Atom Abstraction Mechanism.
Wang K, Mayer JM. Wang K, et al. J Org Chem. 1997 Jun 27;62(13):4248-4252. doi: 10.1021/jo962348b. J Org Chem. 1997. PMID: 11671743
Both cyclopropyl products and ring-opened products are observed: 2-cyclopropyl-2-chloropropane (1, 0.4% yield based on chromium), 2-cyclopropyl-2-propanol (2, 0.2%), 5-chloro-2-methyl-2-pentene (3, 0.3%), and 4-methyl-3-penten-1-ol (4, 0.5%) as well as other ring-op …
Both cyclopropyl products and ring-opened products are observed: 2-cyclopropyl-2-chloropropane (1, 0.4% yield based on chromiu …
[Contamination characteristics and preliminaery exposure risk assessment of chloropropanol esters and glycidyl esters in infant formula sold in Beijing in 2021].
Yuan R, Cui X, Liu P, Li L, Zhao Y, Liu X. Yuan R, et al. Wei Sheng Yan Jiu. 2022 Jul;51(4):645-679. doi: 10.19813/j.cnki.weishengyanjiu.2022.04.024. Wei Sheng Yan Jiu. 2022. PMID: 36047272 Chinese.
RESULTS: The detection rate of 3-chloropropane-1, 2-diol esters(3-MCPDE), 2-chloropropane-1, 3-diol esters(2-MCPDE) and glycidyl esters in infant formulas were 98.6%, 97.1% and 95.7%, respectively. ...
RESULTS: The detection rate of 3-chloropropane-1, 2-diol esters(3-MCPDE), 2-chloropropane-1, 3-diol esters(2-MCPDE) and glycid …
Grunwald-Winstein analysis: isopropyl chloroformate solvolysis revisited.
D'Souza MJ, Reed DN, Erdman KJ, Kyong JB, Kevill DN. D'Souza MJ, et al. Int J Mol Sci. 2009 Mar;10(3):862-879. doi: 10.3390/ijms10030862. Epub 2009 Mar 2. Int J Mol Sci. 2009. PMID: 19399225 Free PMC article.
In nine of the more nucleophilic pure alchohols and aqueous solutions an association-dissociation mechanism is believed to be operative. Deficiencies in the acid production indicate 2-33% isopropyl chloride formation, with the higher values in less nucleophilic solv …
In nine of the more nucleophilic pure alchohols and aqueous solutions an association-dissociation mechanism is believed to be operative. Def …
Cl Atom Initiated Photo-oxidation of Mono-chlorinated Propanes To Form Carbonyl Compounds: A Kinetic and Mechanistic Approach.
Kumar A, Rajakumar B. Kumar A, et al. J Phys Chem A. 2019 Jan 31;123(4):723-741. doi: 10.1021/acs.jpca.8b09132. Epub 2019 Jan 16. J Phys Chem A. 2019. PMID: 30606010
Propionaldehyde and acetone were identified to be major products in the oxidation of 1-chloropropane and 2-chloropropane, respectively. The complete product analyses were carried out using gas chromatography-mass spectrometry (GC-MS) and gas chromatography-infrared …
Propionaldehyde and acetone were identified to be major products in the oxidation of 1-chloropropane and 2-chloropropane, resp …
47 results