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Phthaldialdehyde

SIGMA/P1378 - ≥97% (HPLC), powder or crystals

Synonym: o-Phthalaldehyde; o-Phthalic dicarboxaldehyde; Benzene-1,2-dicarboxaldehyde; OPA

CAS Number: 643-79-8
Empirical Formula (Hill Notation): C8H6O2
Molecular Weight: 134.13
EC Number: 211-402-2
MDL Number: MFCD00003335
Linear Formula: C8H6O2
Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-P1378-1G 1 g
 $45.40
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45-P1378-5G 5 g
 $130.00
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45-P1378-25G 25 g
 $465.00
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45-P1378-100G 100 g
 $1490.00
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assay ≥97% (HPLC)
color white to light yellow
form powder or crystals
InChI 1S/C8H6O2/c9-5-7-3-1-2-4-8(7)6-10/h1-6H
InChI key ZWLUXSQADUDCSB-UHFFFAOYSA-N
mp 55-58 °C
Quality Level 200 
SMILES string O=Cc1ccccc1C=O
storage temp. 2-8°C
Application: Phthaldialdehyde has been used:

• to detect Arg through spectrophotometry using end-point fluorescent sensitive detection
• as a reagent stream with the sample to produce a fluorescent product for determining ammonia in seawater
• in the o-phthaldialdehyde spectrophotometric assay (OPA test) to determine the proteolytic activity (PA)of the strains and the commercial cultures
Biochem/physiol Actions: o-Phthaldialdehyde (OPA) can form fluorescent derivatives while reacting with amino acids.
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.
Packaging: 1, 5, 25, 100 g in glass bottle
Purity ≥97% (HPLC)
mp 55-58 °C
Storage Temp. 2-8°C
UNSPSC 12352201

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