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Merck

79760

Ftaldialdehído

suitable for fluorescence, ≥99.0% (HPLC)

Sinónimos:

Dicarboxaldehído o-ftálico, o-Ftalaldehído, Benceno-1,2-dicarboxaldehído, OPA

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Acerca de este artículo

Fórmula empírica (notación de Hill):
C8H6O2
Número CAS:
Peso molecular:
134.13
UNSPSC Code:
12352201
NACRES:
NA.32
PubChem Substance ID:
EC Number:
211-402-2
Beilstein/REAXYS Number:
878317
MDL number:
Assay:
≥99.0% (HPLC)
Form:
solid
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Nombre del producto

Ftaldialdehído, suitable for fluorescence, ≥99.0% (HPLC)

InChI key

ZWLUXSQADUDCSB-UHFFFAOYSA-N

InChI

1S/C8H6O2/c9-5-7-3-1-2-4-8(7)6-10/h1-6H

SMILES string

O=Cc1ccccc1C=O

assay

≥99.0% (HPLC)

form

solid

Quality Level

mol wt

134.13 g/mol

concentration

≤100% (o-phthaldialdehyde)

impurities

≤0.5% phthalic acid

color

white to light yellow

bp

83 °C/1.067 hPa

mp

54-56 °C

solubility

ethanol: 0.5 g/10 mL, clear, colorless to greenish-yellow
water: 37.7 g/L at 20 °C (OECD Test Guideline 105)

density

1.13 g/cm3 at 20 °C

fluorescence

λex 334 nm; λem 455 nm (Thiol Adduct)
λex 340 nm; λem 450 nm in reaction buffer (with glycine)

suitability

suitable for fluorescence

storage temp.

2-8°C

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Biochem/physiol Actions

El ftaldialdehído se puede utilizar para la derivatización pre-columna de aminoácidos para la separación mediante cromatografía de líquidos de alto rendimiento (HPLC). También se puede utilizar para mediciones mediante citometría de flujo de los grupos tiol de las proteínas.

Application

Phthaldialdehyde or OPA determines amino acids in proteins from animal tissue and food samples. Quantification of amino acids adducts of tyramine and phenylethylamine produced by lactic acid bacteria used OPA as the pre-column derivative reagent for HPLC. Intracellular forms of glutathione (GSH/GSSG) are investigated using o-Phthalaldehyde as the pre-column fluorescent agent.

General description

Phthaldialdehyde, also known as o-Phthalaldehyde or OPA, is a pre-column (HPLC) derivatization reagent. OPA reacts with primary amino acids (AA) except cystine to form highly fluorescent adducts. The fluorescence of the derivatives is monitored at excitation and emission wavelengths of 345nm and 455nm, respectively. The HPLC technique efficiently separates the OPA-AA derivatives.

signalword

Danger

Hazard Classifications

Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT SE 3

target_organs

Respiratory system

Clase de almacenamiento

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 3

flash_point_f

269.6 °F - closed cup

flash_point_c

132 °C - closed cup

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter


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Visite la Librería de documentos

Hanne Vissenaekens et al.
Food research international (Ottawa, Ont.), 145, 110430-110430 (2021-06-12)
Flavonoid bioavailability and bioactivity is associated with interindividual variability, which is partially due to differences in health status. Previously, it was demonstrated that cellular stress, especially mitochondrial stress, increases intracellular quercetin uptake and this is associated with beneficial health effects.
José María Landete et al.
International journal of food microbiology, 115(3), 364-368 (2007-02-20)
The ability of wine lactic acid bacteria to produce tyramine and phenylethylamine was investigated by biochemical and genetic methods. An easy and accurate plate medium was developed to detect tyramine-producer strains, and a specific PCR assay that detects the presence
Zhaolai Dai et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 964, 116-127 (2014-04-16)
Studies of protein nutrition and biochemistry require reliable methods for analysis of amino acid (AA) composition in polypeptides of animal tissues and foods. Proteins are hydrolyzed by 6M HCl (110°C for 24h), 4.2M NaOH (105°C for 20 h), or proteases.
Yun-Bin Han et al.
Applied microbiology and biotechnology, 99(16), 6715-6726 (2015-02-17)
Sphingolipid ceramide N-deacylase (SCDase) catalyzes reversible reactions in which the amide linkage in glycosphingolipids is hydrolyzed or synthesized. While SCDases show great value for the enzymatic synthesis of glycosphingolipids, they are relatively poorly characterized enzymes. In this work, the enzymatic
I Molnár-Perl
Journal of chromatography. A, 913(1-2), 283-302 (2001-05-18)
An overview is presented of HPLC methods currently in use to determine amino acids as their o-phthaldialdyde derivatives in the presence of various SH-group-containing additives. Crucial points that proved to influence the stability of the amino acid OPA derivatives have

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