Skip to Content
Merck
All Photos(1)

Documents

P0532

Sigma-Aldrich

Phthaldialdehyde Reagent

Solution Complete

Synonym(s):

OPA

Sign Into View Organizational & Contract Pricing


About This Item

CAS Number:
MDL number:
UNSPSC Code:
12352201
PubChem Substance ID:
NACRES:
NA.21

Quality Level

storage temp.

2-8°C

SMILES string

[H]C(=O)c1ccccc1C([H])=O

InChI

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

InChI key

ZWLUXSQADUDCSB-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Application

Precolumn derivatization reagent for primary amines and amino acids. The fluorescent derivative can be detected by reverse-phase HPLC. The reaction requires OPA, primary amine and a sulfhydryl. In the presence of excess sulfhydryl, amines can be quantitated. In the presence of excess amine, sulfhydryls can be quantitated.

Other Notes

Contains 1 mg o-phthaldialdehyde (P0657) per mL solution with 2-mercaptoethanol as the sulfhydryl moiety.

related product

Product No.
Description
Pricing

Signal Word

Danger

Hazard Classifications

Aquatic Chronic 2 - Eye Dam. 1 - Met. Corr. 1 - Repr. 1B - Skin Corr. 1B - Skin Sens. 1

WGK

WGK 3


Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Jin-Aa Oh et al.
Journal of chromatography. A, 1247, 99-103 (2012-06-12)
A simple high performance liquid chromatographic (HPLC) method and a highly sensitive gas chromatography mass spectrometric (GC-MS) method have been established for the determination of ortho-phthalaldehyde (OPA) in water. These methods are based on the derivatization of OPA with hydrazine
Noriko Nishino et al.
Environmental science & technology, 46(15), 8198-8204 (2012-07-20)
Naphthalene, typically the most abundant polycyclic aromatic hydrocarbon in the atmosphere, reacts with OH radicals by addition to form OH-naphthalene adducts. These OH-naphthalene adducts react with O(2) and NO(2), with the two reactions being of equal importance in air at
Quansong Li et al.
Physical chemistry chemical physics : PCCP, 14(18), 6561-6568 (2012-03-30)
The potential energy surface for the intramolecular excited state hydrogen transfer (IESHT) in ortho-phthalaldehyde (OPA), which generates an enol ketene, has been studied with ab initio calculations (MS-CASPT2//CASSCF). The goal of our study is to establish the mechanistic factors that
M Nurul Islam et al.
The New phytologist, 193(1), 51-57 (2011-11-11)
• Sphingolipids are emerging as important mediators of cellular and developmental processes in plants, and advances in lipidomics have yielded a wealth of information on the composition of plant sphingolipidomes. Studies using Arabidopsis thaliana showed that the dihydroxy long-chain base
Vishnu Menon et al.
Journal of fluorescence, 23(2), 311-321 (2012-12-06)
This is the first report of inactivation of xyloglucanase from Thermomonospora sp by pepstatin A, a specific inhibitor towards aspartic proteases. The steady state kinetics revealed a reversible, competitive, two-step inhibition mechanism with IC 50 and K i values of

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service