74202
四甲基氯化铵
suitable for ion pair chromatography, LiChropur™, ≥99.0% (AT)
别名:
TMA
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线性分子式:
(CH3)4N(Cl)
化学文摘社编号:
分子量:
109.60
UNSPSC Code:
23151817
NACRES:
NB.21
PubChem Substance ID:
EC Number:
200-880-8
Beilstein/REAXYS Number:
3911201
MDL number:
Assay:
≥99.0% (AT)
Form:
crystals
InChI
1S/C4H12N.ClH/c1-5(2,3)4;/h1-4H3;1H/q+1;/p-1
InChI key
OKIZCWYLBDKLSU-UHFFFAOYSA-M
SMILES string
[Cl-].C[N+](C)(C)C
description
cationic
assay
≥99.0% (AT)
form
crystals
quality
LiChropur™
technique(s)
ion pair chromatography: suitable
mp
>300 °C (lit.)
λ
10 % in H2O
UV absorption
λ: 220 nm Amax: 0.05, λ: 230 nm Amax: 0.04, λ: 250 nm Amax: 0.03, λ: 260 nm Amax: 0.02, λ: 500 nm Amax: 0.02
suitability
corresponds to standard for RP gradient test, corresponds to standard for filter test
Quality Level
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General description
四甲基氯化铵(TMAC)在结构上类似于烷基三甲基铵盐。TMAC的氧化产生甲醛和三甲胺。由于它不溶于有机介质，因此被认为是大多数反应的不良相转移催化剂。但是，它非常适合作为相转移催化剂，与碱金属氟化物一起氟化氯苯甲醛，从而产生1,2,2,2-四氟乙基二氟甲基醚。
Application
TMAC可用于离子交换程序中，以显示pH的增加，以使用Knoevenagel缩合模型了解催化剂[CTA]Si-MCM-41的化学行为。
Legal Information
LiChropur is a trademark of Merck KGaA, Darmstadt, Germany
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 2 Oral - Acute Tox. 3 Dermal - Aquatic Chronic 2 - Skin Irrit. 2 - STOT SE 1 Oral
target_organs
Central nervous system
存储类别
6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
wgk
WGK 3
ppe
Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
Fundamentals, Applications, and Industrial Perspectives
C.M. Starks, M. Halper
Phase Transfer Catalysis (Academic Press), 182 -182 (2012)
Surfactant containing Si-MCM-41: An efficient basic catalyst for the Knoevenagel condensation.
Martins, Leandro, et al.
Applied Catalysis A: General, 312, 77-85 (2006)
Wei Shen et al.
Chemical communications (Cambridge, England), 49(73), 8114-8116 (2013-08-08)
A simple and low-cost colorimetric assay utilizing ferrofluidic nanoparticulate probes (FNPs) and a ligase for single-nucleotide polymorphism genotyping is described. Excellent sensitivity and selectivity were accomplished through the engagement of the FNPs and a ligase chain reaction.
Markus Welcker et al.
Genes & development, 27(23), 2531-2536 (2013-12-04)
The Fbw7 tumor suppressor targets a broad network of proteins for ubiquitylation. Here we show critical functions for Fbw7 dimerization in regulating the specificity and robustness of degradation. Dimerization enables Fbw7 to target substrates through concerted binding to two suboptimal
Lulu Xie et al.
Science (New York, N.Y.), 342(6156), 373-377 (2013-10-19)
The conservation of sleep across all animal species suggests that sleep serves a vital function. We here report that sleep has a critical function in ensuring metabolic homeostasis. Using real-time assessments of tetramethylammonium diffusion and two-photon imaging in live mice
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