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/449/386/product-dating-information-mk.pdf
Wichtige Dokumente
149357
2,5-Dihydroxybenzoesäure
98%
Synonym(e):
2,5-DHBA, DHB, Gentisinsäure, Hydrochinoncarbonsäure
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About This Item
Empfohlene Produkte
Qualitätsniveau
Assay
98%
Form
powder
mp (Schmelzpunkt)
204-208 °C (lit.)
Funktionelle Gruppe
carboxylic acid
SMILES String
OC(=O)c1cc(O)ccc1O
InChI
1S/C7H6O4/c8-4-1-2-6(9)5(3-4)7(10)11/h1-3,8-9H,(H,10,11)
InChIKey
WXTMDXOMEHJXQO-UHFFFAOYSA-N
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Verwandte Kategorien
Allgemeine Beschreibung
Anwendung
- Als Matrix bei der MALDI-TOF-Massenspektrometrieanalyse des Poly(styrol-co-pentafluorstyrol)copolymers.[1]
- Zum Herstellen von pharmakologisch wichtigem 2,5-DBHA-Gelatinekonjugat, das bei der Entwicklung von Arzneimittelformulierungen als Polymer dienen kann.[2]
- Als dreizahniger Ligand zur Synthese von Molybdänkomplexen durch Umsetzung mit (PPh4)4Mo8O26.[3]
- Als Ausgangsmaterial bei der Totalsynthese von Landomycin A, einem Angucyclin-Antibiotikum.[4]
Signalwort
Warning
H-Sätze
Gefahreneinstufungen
Acute Tox. 4 Oral
Lagerklassenschlüssel
11 - Combustible Solids
WGK
WGK 3
Persönliche Schutzausrüstung
dust mask type N95 (US), Eyeshields, Gloves
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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
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How to prepare a stock solution of 2,5-dihydroxybenzoic acid 149357?
1 answer-
The solubility of this product has not been tested. However, product 85707, which is tested for suitability in Maldi-MS, is tested for solubility at 0.1 g in 10 mL Methanol. These items have the same CAS number and the properties are identical.
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