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Merck

79266

Trimethylphenylammonium hydroxide solution

~0.5 M (CH3)3N(OH)C6H5 in methanol, derivatization grade (GC derivatization), LiChropur™

Synonym(s):

Phenyltrimethylammonium hydroxide, TMAH

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About This Item

Linear Formula:
(CH3)3N(OH)C6H5
CAS Number:
1899-02-1
Molecular Weight:
153.22
UNSPSC Code:
41115710
NACRES:
NA.22
PubChem Substance ID:
329768356
MDL number:
MFCD00041899
Beilstein/REAXYS Number:
3917033

Key Documents

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Product Name

Trimethylphenylammonium hydroxide solution, ~0.5 M (CH3)3N(OH)C6H5 in methanol, derivatization grade (GC derivatization), LiChropur™

InChI

1S/C9H14N.H2O/c1-10(2,3)9-7-5-4-6-8-9;/h4-8H,1-3H3;1H2/q+1;/p-1

SMILES string

[OH-].C[N+](C)(C)c1ccccc1

InChI key

HADKRTWCOYPCPH-UHFFFAOYSA-M

grade

derivatization grade (GC derivatization)

form

liquid

quality

LiChropur™

reaction suitability

reagent type: derivatization reagent
reaction type: Esterifications

concentration

~0.5 M (CH3)3N(OH)C6H5 in methanol

technique(s)

gas chromatography (GC): suitable

impurities

≤0.2% halides (as chloride)

storage temp.

2-8°C

Quality Level

100

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Application

Learn more in the Product Information
Suitable for the derivatization of amino acids, n-methyl and n-aryl carbamates and fatty acids, clonidine, and substituted phenylureas.
TMAH may be used as a 0.1 mole/litre solution in methanol to determine plasma concentrations of carbamazepine and other anticonvulsant drugs, including phenobarbital, diphenylhydantoin, primidone, and mephenytoin using Gas-Liquid Chromatography.

Disclaimer

Sales restrictions may apply

General description

Trimethylphenylammonium hydroxide (TMAH) is a methylating reagent.

Other Notes

Reagent for n-methyl and methyl esters.

Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

signalword

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1B - STOT SE 1

target_organs

Eyes

Storage Class

3 - Flammable liquids

wgk

WGK 3

flash_point_f

51.8 °F - closed cup

flash_point_c

11 °C - closed cup

ppe

Faceshields, Gloves, Goggles

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN6600
BCCF7109
STBJ1243
STBH7120
STBG9018

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Simultaneous determination of carbamazapine ("Tegretol") and other anticonvulsants in human plasma by gas-liquid chromatography.
J C Roger et al.
Clinical chemistry, 19(6), 590-592 (1973-06-01)
A Ranz et al.
Journal of biochemical and biophysical methods, 69(1-2), 3-14 (2006-03-28)
In the present study, a derivatization method for the determination of acidic herbicides has been investigated. This procedure involves the methylation with the quaternary ammonium salt trimethylanilinium hydroxide (TMAH) directly in the gas chromatographic auto-sampler vial for analysis by gas
Timothy J Jensen et al.
Journal of photochemistry and photobiology. B, Biology, 100(2), 100-111 (2010-06-19)
Five cationic porphyrins bearing one to four -N(CH(3))(3)(+) groups linked to the p-phenyl positions of 5,10,15,20-tetraphenylporphyrin (TPP) were synthesized in order to study the effect of overall charge and its distribution on the cellular uptake, phototoxicity and intracellular localization using
Jeffrey T Auletta et al.
Chemico-biological interactions, 187(1-3), 135-141 (2010-05-25)
Acetylcholinesterase (AChE) contains a narrow and deep active site gorge with two sites of ligand binding, an acylation site (or A-site) at the base of the gorge and a peripheral site (or P-site) near the gorge entrance. The P-site contributes
Alec N Salt et al.
Hearing research, 283(1-2), 14-23 (2011-12-20)
It has been widely believed that drug entry from the middle ear into perilymph occurs primarily via the round window (RW) membrane. Entry into scala vestibuli (SV) was thought to be dominated by local, inter-scala communication between scala tympani (ST)
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