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
A4382
4-Aminoantipyrine
reagent grade
Synonym(s):
4-Amino-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one, Ampyrone
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About This Item
Recommended Products
grade
reagent grade
Quality Level
Assay
≥97% (HPLC)
form
powder
mp
105-110 °C (lit.)
solubility
water: 50 mg/mL
SMILES string
CN1N(c2ccccc2)C(=O)C(N)=C1C
InChI
1S/C11H13N3O/c1-8-10(12)11(15)14(13(8)2)9-6-4-3-5-7-9/h3-7H,12H2,1-2H3
InChI key
RLFWWDJHLFCNIJ-UHFFFAOYSA-N
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Application
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 4 Oral
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
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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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What is the recommended storage method for stock solutions of item A4382, 4-Aminoantipyrine?
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To enhance solubility, it is advised to warm the tube at 37 ℃ and subsequently shake it in an ultrasonic bath for a brief period. Stock solutions can be stored at temperatures below -20℃ for several months. Ideally, it is recommended to prepare and utilize the solution on the same day. However, if advance preparation is necessary, stock solutions must be sealed and stored below -20℃. Prior to use, allowing the vial to reach room temperature for at least an hour is recommended.
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