199885
4-甲基-1H-咪唑
98%
别名:
1H-4-甲基咪唑, 4(或5)-甲基咪唑, 4-甲基-1H-咪唑, 4-甲基咪唑, 5-甲基-1H-咪唑, 5-甲基咪唑
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关于此项目
经验公式（希尔记法）:
C4H6N2
化学文摘社编号:
分子量:
82.10
UNSPSC Code:
12352005
NACRES:
NA.22
PubChem Substance ID:
EC Number:
212-497-3
Beilstein/REAXYS Number:
1453
MDL number:
Assay:
98%
InChI key
XLSZMDLNRCVEIJ-UHFFFAOYSA-N
InChI
1S/C4H6N2/c1-4-2-5-3-6-4/h2-3H,1H3,(H,5,6)
SMILES string
Cc1c[nH]cn1
assay
98%
bp
263 °C (lit.)
mp
44-47 °C (lit.)
solubility
H2O: soluble, clear, colorless to yellow (50 mg/mL)
Quality Level
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General description
采用GC-MS 法对咖啡中的 4 (5)-甲基咪唑进行定量 。
signalword
Danger
flash_point_f
314.6 °F - closed cup
flash_point_c
157 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Carc. 1B - Repr. 1B
存储类别
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
S Casal et al.
Journal of chromatography. A, 976(1-2), 285-291 (2002-12-05)
A GC-MS method is described for quantification of 4-(5-)methylimidazole (4MI) in coffee. Although tested, GC-flame ionization detection proved inadequate for this purpose due to the complexity of the coffee matrix. The developed method was based on ion-pair extraction with bis-2-ethylhexylphosphate
Hitomi Yamaguchi et al.
Journal of agricultural and food chemistry, 59(18), 9770-9775 (2011-09-02)
A method for the determination of 4(5)-methylimidazole (4MeI) in naturally brewed soy sauce was developed for the first time using solid-phase extraction (SPE) and liquid chromatography-tandem mass spectrometry (LC-MS/MS). SPE on silica-based reversed-phase cartridges with heptafluorobutyric acid as an ion-pairing
Cédric Moretton et al.
Journal of agricultural and food chemistry, 59(8), 3544-3550 (2011-03-09)
4-Methylimidazole (4MeI) is a nitrogen compound formed during the manufacture of class III and IV caramel colors. The European Commission has limited its content to 250 ppm. Two methods were compared to perform 4MeI quantification in caramels. The first one
Joon-Kwan Moon et al.
Journal of agricultural and food chemistry, 59(2), 615-618 (2010-12-29)
4(5)-Methylimidazole has received the attention of federal and state regulatory agencies because of its carcinogenicity and common presence in foods and beverages. In the present study, the formation of 4(5)-methylimidazole in Maillard reaction model systems consisting of D-glucose/NH(3), L-rhamnose/NH(3), methylglyoxal/NH(3)
Satoshi Ueda et al.
Journal of the American Chemical Society, 134(1), 700-706 (2011-12-01)
The completely N(1)-selective Pd-catalyzed arylation of unsymmetric imidazoles with aryl halides and triflates is described. This study showed that imidazoles have a strong inhibitory effect on the in situ formation of the catalytically active Pd(0)-ligand complex. The efficacy of the
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