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1044006

USP

Aspirin

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

Acetylsalicylic acid, 2-Acetoxybenzoic acid, O-Acetylsalicylic acid, ASA, Aspirin

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500 MG

$455.00

$455.00

Estimated to ship onJanuary 20, 2026Details

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About This Item

Linear Formula:
2-(CH3CO2)C6H4CO2H
CAS Number:
50-78-2
Molecular Weight:
180.16
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
329749073
MDL number:
MFCD00002430
Beilstein/REAXYS Number:
779271

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Product Name

Aspirin, United States Pharmacopeia (USP) Reference Standard

InChI

1S/C9H8O4/c1-6(10)13-8-5-3-2-4-7(8)9(11)12/h2-5H,1H3,(H,11,12)

SMILES string

CC(=O)Oc1ccccc1C(O)=O

InChI key

BSYNRYMUTXBXSQ-UHFFFAOYSA-N

grade

pharmaceutical primary standard

API family

aspirin

manufacturer/tradename

USP

mp

134-136 °C (lit.)

application(s)

pharmaceutical (small molecule)

format

neat

Gene Information

human ... PTGS1(5742), PTGS2(5743)

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1 of 4

This Item
BP617A0200000Y0001460
Aspirin United States Pharmacopeia (USP) Reference Standard

USP

1044006

Aspirin

Aspirin British Pharmacopoeia (BP) Reference Standard

BP617

Aspirin

Acetylsalicylic acid European Pharmacopoeia (EP) Reference Standard

A0200000

Acetylsalicylic acid

Acetylsalicylic acid for peak identification European Pharmacopoeia (EP) Reference Standard

Y0001460

Acetylsalicylic acid for peak identification

manufacturer/tradename

USP

manufacturer/tradename

BP

manufacturer/tradename

EDQM

manufacturer/tradename

EDQM

grade

pharmaceutical primary standard

grade

pharmaceutical primary standard

grade

pharmaceutical primary standard

grade

pharmaceutical primary standard

format

neat

format

neat

format

neat

format

neat

application(s)

pharmaceutical (small molecule)

application(s)

pharmaceutical
pharmaceutical small molecule

application(s)

pharmaceutical (small molecule)

application(s)

pharmaceutical (small molecule)

API family

aspirin

API family

aspirin

API family

aspirin

API family

aspirin

mp

134-136 °C (lit.)

mp

134-136 °C (lit.)

mp

134-136 °C (lit.)

mp

134-136 °C (lit.)

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Application

Aspirin USP reference standard suitable for use in specified USP compendial quality tests and assays.

Also used to prepare standard solution for impurity analysis and performance test according to the given below monographs of United States Pharmacopeia (USP):
  • Carisoprodol and Aspirin Tablets. [1]
  • Aspirin Tablets. [2]
  • Aspirin Boluses. [3]
  • Butalbital, Aspirin, Caffeine, and Codeine Phosphate Capsules. [4]

Biochem/physiol Actions

Blocks the production of prostaglandins by inhibiting cyclooxygenase (prostaglandin H synthase), with greater selectivity toward the COX-1 isoform. The antithrombotic effect is due to the inhibition of COX-1 in platelets that blocks thromboxane production and platelet aggregation. Chemopreventive against colorectal and other solid tumors.

General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia.

Other Notes

Sales restrictions may apply.

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Description
Pricing

related product

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pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

482.0 °F

flash_point_c

250 °C

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Certificates of Analysis (COA)

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Butalbital, Aspirin, Caffeine, and Codeine Phosphate Capsules
United States Pharmacopeia and National Formulary
United States Pharmacopeia, 46(2), 648-648 (2013)
Aspirin Tablets
United States Pharmacopeia and National Formulary
United States Pharmacopeia, 42(4), 392-392 (2020)
Carisoprodol and Aspirin Tablets
United States Pharmacopeia and National Formulary
United States Pharmacopeia, 778-778 (2013)
Aspirin Boluses
United States Pharmacopeia and National Formulary
United States Pharmacopeia, 42(4), 388-388 (2017)
Laurent Arnaud et al.
Autoimmunity reviews, 13(3), 281-291 (2013-11-06)
We performed a meta-analysis to determine whether aspirin has a significant protective effect on risk of first thrombosis among patients with antiphospholipid antibodies (aPL+). Observational and interventional studies identified from the Medline, Embase and Cochrane databases were selected if they
View All Related Papers

Questions

1–2 of 2 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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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