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P0657

Sigma-Aldrich

Phthaldialdehyde

suitable for HPLC fluorimetric detection of amino acids, ≥99% (HPLC), powder or crystals

Synonym(s):

o-Phthalaldehyde, o-Phthalic dicarboxaldehyde, Benzene-1,2-dicarboxaldehyde, OPA

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About This Item

Empirical Formula (Hill Notation):
C8H6O2
CAS Number:
643-79-8
Molecular Weight:
134.13
Beilstein/REAXYS Number:
878317
EC Number:
211-402-2
MDL number:
MFCD00003335
UNSPSC Code:
12352201
PubChem Substance ID:
24898119
NACRES:
NA.21

Quality Level

200

assay

≥99% (HPLC)

form

powder or crystals

technique(s)

HPLC: suitable

color

white to light yellow

mp

55-58 °C

suitability

suitable for HPLC fluorimetric detection of amino acids

storage temp.

2-8°C

SMILES string

O=Cc1ccccc1C=O

InChI

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

InChI key

ZWLUXSQADUDCSB-UHFFFAOYSA-N

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Application

Phthaldialdehyde has been used:
  • in the preparation of O-phthaldialdehyde reagent for analysing gentamycin content
  • in the preparation of reagent for determining the degree of hydrolysis of milk proteins
  • in the measurement of free amino acids of milk samples by O-phthaldialdehyde/N-acetyl-L-cysteine (OPA/NAC) assay
  • in the derivatization of putrescine samples

Biochem/physiol Actions

Phthaldialdehyde can be used for the pre-column derivatization of amino acids for high-performance liquid chromatography (HPLC) separation. It may also be used for flow cytometric measurements of protein thiol groups.

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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

Storage Class

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

wgk_germany

WGK 3

flash_point_f

269.6 °F - closed cup

flash_point_c

132 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificates of Analysis (COA)

Lot/Batch Number
BCCF5794
BCCC3481
BCCB5919
BCBW3354
BCBT6314

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Bioactive peptides from bovine milk alpha-casein: isolation, characterization and multifunctional properties
Srinivas S and Prakash V
International Journal of Peptide Research and Therapeutics, 16(1), 7-15 (2010)
Colour change and proteolysis of skim milk during high pressure thermal-processing
Devi AF, et al.
Journal of Food Engineering, 147, 102-110 (2015)
Gentamicin-eluting bioresorbable composite fibers for wound healing applications
Zilberman M, et al.
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