Merck
Todas las fotos(1)

73594

Supelco

Ammonium acetate

LiChropur, eluent additive for LC-MS

Fórmula lineal:
CH3CO2NH4
Número de CAS:
Peso molecular:
77.08
Beilstein:
4186741
Número de EC:
Número MDL:
eCl@ss:
39021908
ID de la sustancia en PubChem:
NACRES:
NB.21

Nivel de calidad

100

grado

eluent additive for LC-MS

ensayo

≥99.0% (calc. on dry substance, T)

formulario

solid

calidad

LiChropur

technique(s)

LC/MS: suitable

impurezas

insoluble matter, passes filter test
≤1% water

residuo de ign.

≤0.01% (as SO4)

pH

6.2-7.5 (25 °C, 1 M in H2O)

mp

110-112 °C (dec.) (lit.)

solubilidad

H2O: 1 M at 20 °C, clear, colorless

trazas de anión

chloride (Cl-): ≤5 mg/kg
nitrate (NO3-): ≤10 mg/kg
sulfate (SO42-): ≤10 mg/kg

trazas de catión

Al: ≤1 mg/kg
As: ≤0.1 mg/kg
Ba: ≤1 mg/kg
Bi: ≤1 mg/kg
Ca: ≤5 mg/kg
Cd: ≤1 mg/kg
Co: ≤1 mg/kg
Cr: ≤1 mg/kg
Cu: ≤1 mg/kg
Fe: ≤1 mg/kg
K: ≤5 mg/kg
Li: ≤1 mg/kg
Mg: ≤1 mg/kg
Mn: ≤1 mg/kg
Mo: ≤1 mg/kg
Na: ≤5 mg/kg
Ni: ≤1 mg/kg
Pb: ≤1 mg/kg
Sr: ≤1 mg/kg
Zn: ≤1 mg/kg

λ

1 M in H2O

Absorción UV

λ: 260 nm Amax: ≤0.015
λ: 280 nm Amax: ≤0.010

idoneidad

passes test for LC-MS

SMILES string

N.CC(O)=O

InChI

1S/C2H4O2.H3N/c1-2(3)4;/h1H3,(H,3,4);1H3

InChI key

USFZMSVCRYTOJT-UHFFFAOYSA-N

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Descripción general

Ammonium acetate exists as a white crystal. It is prepared from acetic acid and ammonia by neutralization to pH 7.0. It is widely used in analytical chemistry, drugs and in textile dyeing.

Aplicación

Ammonium acetate has been used to prepare eluents for UPLC-MS/MS and HPLC-MS/MS to compare the matrix effect of 9 pharmaceutical compounds in aqueous environmental samples. It has also been used as an additive to improve detection of phosphopeptides using MALDI-MS.

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Información legal

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Código de clase de almacenamiento

13 - Non Combustible Solids

WGK

WGK 1

Punto de inflamabilidad F

Not applicable

Punto de inflamabilidad C

Not applicable

Equipo de protección personal

Eyeshields, Gloves, type N95 (US)

Certificado de Análisis

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Certificado de origen

Introduzca el número de lote para buscar un Certificado de origen (COO).

Más documentos

Presupuestos y pedidos

Dale L. Perry
Handbook of Inorganic Compounds, 17-17 (1995)
Enhanced detection of phosphopeptides in matrix-assisted laser desorption/ionization mass spectrometry using ammonium salts.
Asara JM, Allison J.
Journal of the American Society For Mass Spectrometry, 10(1), 35-44 (1999)
J M Asara et al.
Journal of the American Society for Mass Spectrometry, 10(1), 35-44 (1999-01-15)
Matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS) has been used successfully to detect phosphorylation sites in proteins. Applications may be limited by the low response of phosphopeptides compared to nonphosphorylated peptides in MALDI MS. The addition of ammonium salts to
Jet C Van De Steene et al.
Journal of the American Society for Mass Spectrometry, 19(5), 713-718 (2008-03-18)
When developing an LC-MS/MS-method matrix effects are a major issue. The effect of co-eluting compounds arising from the matrix can result in signal enhancement or suppression. During method development much attention should be paid to diminishing matrix effects as much
Comparison of matrix effects in HPLC-MS/MS and UPLC-MS/MS analysis of nine basic pharmaceuticals in surface waters.
Van De Steene JC, Lambert WE.
Journal of the American Society For Mass Spectrometry, 19(5), 713-718 (2008)

Artículos

Impact of Mobile Phase Additives on LC-MS Sensitivity, Demonstrated using Spice Cannabinoids

This study demonstrates the impact of various mobile phase modifiers on the separation; formate modifiers outperform acetate in terms of MS signals (or sensitivity) and chromatographic resolution.

UHPLC/MS Analysis of Diazepam and Metabolites on Titan™ C18, Comparison of Flow Rate and Column Length

Separation of Oxazepam; Desmethyldiazepam, analytical standard; Temazepam, analytical standard; Diazepam

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