NPYR
NPYR structure
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Common Name | NPYR | ||
|---|---|---|---|---|
| CAS Number | 930-55-2 | Molecular Weight | 100.119 | |
| Density | 1.2±0.1 g/cm3 | Boiling Point | 214.0±9.0 °C at 760 mmHg | |
| Molecular Formula | C4H8N2O | Melting Point | N/A | |
| MSDS | N/A | Flash Point | 83.3±0.0 °C | |
| Symbol |
GHS07, GHS08 |
Signal Word | Warning | |
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Commercial formaldehyde standard for mass calibration in mass spectrometry.
J. Mass Spectrom. 50(3) , 463-9, (2015) Common calibration standards for mass spectrometry can be a source of many problems including instrument contamination, ionization suppression and formation of unidentified ions during subsequent analysis. In this article, we present a new approach for the ca... |
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Toxicological assessment of kretek cigarettes: Part 1: background, assessment approach, and summary of findings.
Regul Toxicol Pharmacol 70 Suppl 1 , S2-14, (2014) This publication introduces a series of six other publications describing the toxicological assessment of kretek cigarettes, i.e., cigarettes characterized primarily by the use of a significant amount of cloves as an ingredient added to the tobacco. This pape... |
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Removal of N-nitrosamines in a membrane bioreactor and nanofiltration hybrid system for municipal wastewater reclamation: Process efficiency and mechanisms.
Bioresour. Technol. 190 , 499-507, (2015) This study investigated the removal efficiency and mechanisms of water contaminants (mainly N-nitrosamines) during municipal wastewater reclamation by a membrane bioreactor (MBR) and nanofiltration (NF) hybrid system. The removal of bulk water contaminants wa... |
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Analysis of Nitrosamines in Cooked Bacon by QuEChERS Sample Preparation and Gas Chromatography-Tandem Mass Spectrometry with Backflushing.
J. Agric. Food Chem. 63 , 10341-51, (2015) Nitrites are added as a preservative to a variety of cured meats, including bacon, to kill bacteria, extend shelf life, and improve quality. During cooking, nitrites in the meat can be converted to carcinogenic nitrosamines (NAs), the formation of which is mi... |
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A salting out-acetonitrile homogeneous extraction coupled with gas chromatography-mass spectrometry method for the simultaneous determination of thirteen N-nitrosamines in skin care cosmetics.
J. Chromatogr. A. 1422 , 82-8, (2015) A sensitive gas chromatography-mass spectrometry method was established for the simultaneous determination of thirteen N-nitrosamines (NAs) in skin care cosmetics. The cosmetics samples were firstly dispersed by water and subsequently extracted and purified u... |
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New pressure-assisted sweeping on-line preconcentration for highly polar environmentally relevant nitrosamines: Part 2. Cationic and anionic surfactants with zero-flow capillaries.
Electrophoresis 36(7-8) , 1016-23, (2015) We recently introduced a pressure-assisted sweeping-reversed migration-EKC (RM-EKC) method for preconcentration of neutral polar N-nitrosamines with low affinity for the micellar phase. The type of surfactant and phase ratio are dominant factors in dictating ... |
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Influence of various cooking methods on the concentrations of volatile N-nitrosamines and biogenic amines in dry-cured sausages.
J. Food Sci. 77(5) , C560-5, (2012) N-nitrosamines, biogenic amines, and residual nitrites are harmful substances and are often present in cured meats. The effects of different cooking methods (boiling, pan-frying, deep-frying, and microwave) were investigated on their contents in dry-cured sau... |
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The enhancing effect of ethanol on the mutagenic activation of N-nitrosomethylbenzylamine by cytochrome P450 2A in the rat oesophagus.
Mutagenesis 28(2) , 161-9, (2013) Alcohol consumption is frequently associated with various cancers and the enhancement of the metabolic activation of carcinogens has been proposed as a mechanism underlying this relationship. The ethanol-induced enhancement of N-nitrosodiethylamine (DEN)-medi... |
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Protective effect of vitamin C towards N-nitrosamine-induced DNA damage in the single-cell gel electrophoresis (SCGE)/HepG2 assay.
Toxicol. In Vitro 21(7) , 1311-7, (2007) The aim of this study was to investigate the protective effect of vitamin C towards N-nitrosamine-induced DNA damage in the single-cell gel electrophoresis (SCGE)/HepG2 assay. None of the vitamin C concentrations tested (1-10 microM) in presence or absence of... |
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A cell-microelectronic sensing technique for profiling cytotoxicity of chemicals.
Anal. Chim. Acta 615(1) , 80-7, (2008) A cell-microelectronic sensing technique is developed for profiling chemical cytotoxicity and is used to study different cytotoxic effects of the same class chemicals using nitrosamines as examples. This technique uses three human cell lines (T24 bladder, Hep... |