If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
P0657
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
Select a Size
$73.20
$200.00
$610.00
About This Item
Skip To
Quality Level
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
Looking for similar products? Visit Product Comparison Guide
Related Categories
1 of 4
This Item | P1378 | 79760 | 8.21027 |
|---|---|---|---|
| assay ≥99% (HPLC) | assay ≥97% (HPLC) | assay ≥99.0% (HPLC) | assay ≥97.5% (GC) |
| Quality Level 200 | Quality Level 200 | Quality Level 100 | Quality Level 200 |
| storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-30°C |
| mp 55-58 °C | mp 55-58 °C | mp 54-56 °C | mp 52-58 °C |
| form powder or crystals | form powder or crystals | form solid | form solid |
| technique(s) HPLC: suitable | technique(s) - | technique(s) - | technique(s) - |
Application
- in the preparation of O-phthaldialdehyde reagent for analysing gentamycin content[1]
- in the preparation of reagent for determining the degree of hydrolysis of milk proteins[2]
- in the measurement of free amino acids of milk samples by O-phthaldialdehyde/N-acetyl-L-cysteine (OPA/NAC) assay[3]
- in the derivatization of putrescine samples[4]
Biochem/physiol Actions
signalword
Danger
hcodes
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
Choose from one of the most recent versions:
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
Helpful?
-
Active Filters
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