2-Acetyl-1-methylpyrrole typical Properties
Item
Specifications
Appearance
Colorless to brown liquid
Purity (HPLC)
≥98%
Density（25℃）
1.043-1.056
RI（20℃）
1.540-1.550
2-Acetyl-1-methylpyrrole Usage
Used in food flavors such as coffee and fruit.
Academic Research.
A- and B-band electron excitation and structural dynamics of the Franck-Condon region of 2-acetyl-1-methylpyrrole (2-Ac-NMP). In TD-B3LYP / 6-311 ++ G (d, p) At the calculation level, the main body of the transitions absorbed by the A and B bands is π → π *. The resonance Raman spectroscopy of the A and B bands refers to the fundamental frequency, the overfrequency, and the combined frequency of the 13 vibration modes and 8 vibration modes, respectively. Among them, CO stretching vibration (ν8), C3-C4-C5 asymmetric stretching vibration + C2-C6 stretching vibration (ν14) and CH in-plane rocking on the ring (ν18) contributed the most to the intensity of Raman spectrum, indicating 2-Ac-NMP The structure dynamics of the excited state of Sπ is mainly along the reaction coordinates. The effect of the solvent on the intensity mode of the resonance Raman spectrum is investigated. The results show that in the same solvent, as the excitation wavelength changes from long to short, the CO stretching vibration mode (ν8) The intensity shows the phenomenon of changing from strong to weak and then to strong. This change law is related to the Sn / Sπ state mixing or potential energy surface crossover in the Franck-Condon region, and is effectively controlled by the solvent.
2-Acetyl-1-methylpyrrole Packaging and Shipping
Packing:5kg plastic bucket
Delivery: by air
2-Acetyl-1-methylpyrrole Storage
Store in a cool, ventilated warehouse, the storage temperature should not exceed 37℃ It should be stored separately from oxidants and food chemicals, and should not be mixed.
