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Phthaldialdehyde

SIAL/P0657 - suitable for HPLC fluorimetric detection of amino acids, ≥99% (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-P0657-250MG 250 mg
 $68.80
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45-P0657-1G 1 g
 $188.00
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45-P0657-5G 5 g
 $572.00
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assay ≥99% (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
suitability suitable for HPLC fluorimetric detection of amino acids
technique(s) HPLC: suitable
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.
Purity ≥99% (HPLC)
mp 55-58 °C
Storage Temp. 2-8°C
UNSPSC 12352201

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