87851
2,2,6,6-四甲基-3,5-庚二酮
LiChropur™, ≥98.0%
别名:
二叔戊酰甲烷
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线性分子式:
(CH3)3CCOCH2COC(CH3)3
化学文摘社编号:
分子量:
184.28
EC Number:
214-268-3
UNSPSC Code:
12352200
PubChem Substance ID:
Beilstein/REAXYS Number:
1447269
MDL number:
产品名称
2,2,6,6-四甲基-3,5-庚二酮, LiChropur™, ≥98.0%
InChI key
YRAJNWYBUCUFBD-UHFFFAOYSA-N
InChI
1S/C11H20O2/c1-10(2,3)8(12)7-9(13)11(4,5)6/h7H2,1-6H3
SMILES string
CC(C)(C)C(=O)CC(=O)C(C)(C)C
grade
derivatization grade ((GC derivatization))
assay
≥98.0% (GC)
≥98.0%
form
liquid
quality
LiChropur™
reaction suitability
reagent type: derivatization reagent
reaction type: Acylations
refractive index
n20/D 1.456-1.462
n20/D 1.459 (lit.)
bp
72-73 °C/6 mmHg (lit.)
density
0.883 g/mL at 25 °C (lit.)
Quality Level
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General description
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.
Legal Information
LiChropur is a trademark of Merck KGaA, Darmstadt, Germany
存储类别
10 - Combustible liquids
wgk
WGK 1
flash_point_f
152.6 °F - closed cup
flash_point_c
67 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
法规信息
新产品
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G M Kanapilly et al.
Health physics, 39(3), 505-519 (1980-09-01)
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
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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