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一般說明
Acylation, a replacement to silylation, allows the conversion of compounds that consist of active hydrogens (-OH, -SH and -NH) into esters, thioesters, and amides via the action of a carboxylic acid or derivative. The carbonyl group adjacent to the halogenated carbons is known to improve the electron capture detector (ECD) response. Acylation has several advantages:
2,2,6,6-Tetramethyl-3,5-heptanedione is a reagent used to form fragmentation-directing derivatives for GC/MS analysis.
- It enhances the stability of compounds by protecting unstable groups.
- It may confer volatility on substances like carbohydrates or amino acids, that have several polar groups that they are non-volatile and usually decompose on heating.
- It facilitates the separations not possible with underivatized compounds.
- Compounds are detectable at very low levels with an ECD.
2,2,6,6-Tetramethyl-3,5-heptanedione is a reagent used to form fragmentation-directing derivatives for GC/MS analysis.
法律資訊
LiChropur is a trademark of Merck KGaA, Darmstadt, Germany
儲存類別代碼
10 - Combustible liquids
水污染物質分類(WGK)
WGK 1
閃點(°F)
152.6 °F - closed cup
閃點(°C)
67 °C - closed cup
個人防護裝備
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Elizabeth Buck et al.
Organic letters, 4(9), 1623-1626 (2002-04-27)
[reaction: see text]. In the copper salt catalyzed ether formation from aryl bromides or iodides and phenols, 2,2,6,6-tetramethylheptane-3,5-dione (TMHD) was found to greatly accelerate the ordinarily difficult reaction, making it occur under more moderate temperatures and reaction times. A series
Ultrafine 239PuO2 aerosol generation, characterization and short-term inhalation study in the rat.
G M Kanapilly et al.
Health physics, 39(3), 505-519 (1980-09-01)
Franklin P Ow et al.
The journal of physical chemistry. A, 110(25), 7751-7754 (2006-06-23)
Laser photoionization and ligand photodissociation in Ln(thd)(3) (Ln = Eu, Tb, Gd; thd = 2,2,6,6-tetramethyl-3,5-heptanedionato) are studied in a molecular beam via time-of-flight mass spectrometry. The fragmentation patterns are strongly wavelength dependent. With 355 nm excitation, the mass spectrum is
R Schwartz
Federation proceedings, 41(10), 2709-2713 (1982-08-01)
The potential of the stable isotope 26Mg (natural abundance 11.01 atom %) as a biological tracer has been explored using neutron activation (NA) and mass spectrometry (MS) for detection. The high natural abundance of this isotope restricts its utility to
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