Skip to Content
Merck
All Photos(1)

Key Documents

1044006

USP

Aspirin

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

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

Sign Into View Organizational & Contract Pricing


About This Item

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

grade

pharmaceutical primary standard

API family

aspirin

manufacturer/tradename

USP

mp

134-136 °C (lit.)

application(s)

pharmaceutical (small molecule)

format

neat

SMILES string

CC(=O)Oc1ccccc1C(O)=O

InChI

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

InChI key

BSYNRYMUTXBXSQ-UHFFFAOYSA-N

Gene Information

Looking for similar products? Visit Product Comparison Guide

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.

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.
  • Aspirin Tablets.
  • Aspirin Boluses.
  • Butalbital, Aspirin, Caffeine, and Codeine Phosphate Capsules.

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.

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.  ​

Other Notes

Sales restrictions may apply.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Precautionary Statements

Hazard Classifications

Acute Tox. 4 Oral

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

482.0 °F

Flash Point(C)

250 °C


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Yu-Chi Tung et al.
Medical care, 52(6), 519-527 (2014-05-03)
A volume-outcome relationship has been found for acute myocardial infarction (AMI); however, the mechanisms underlying the relationship remain unclear. In particular, it is not known whether processes of care are mediators of the volume-outcome relationship, that is, whether the mechanisms
Gideon Sahar et al.
The Journal of thoracic and cardiovascular surgery, 149(4), 1042-1050 (2015-04-25)
We compared the flow rates, reactivity, and morphology of the distal internal thoracic artery and its branches, the superior epigastric and musculophrenic arteries, to test their applicability as possible conduits in coronary artery bypass grafting surgeries. Skeletonized internal thoracic artery
Gwen M C Masclee et al.
Gastroenterology, 147(4), 784-792 (2014-06-18)
Concomitant use of nonsteroidal anti-inflammatory drugs (NSAIDs) and low-dose aspirin increases the risk of upper gastrointestinal bleeding (UGIB). Guidelines suggest avoiding certain drug combinations, yet little is known about the magnitude of their interactions. We estimated the risk of UGIB
Yasuo Ikeda et al.
JAMA, 312(23), 2510-2520 (2014-11-18)
Prevention of atherosclerotic cardiovascular diseases is an important public health priority in Japan due to an aging population. To determine whether daily, low-dose aspirin reduces the incidence of cardiovascular events in older Japanese patients with multiple atherosclerotic risk factors. The
Sigrun Halvorsen et al.
Journal of the American College of Cardiology, 64(3), 319-327 (2014-07-19)
Although the use of oral anticoagulants (vitamin K antagonists) has been abandoned in primary cardiovascular prevention due to lack of a favorable benefit-to-risk ratio, the indications for aspirin use in this setting continue to be a source of major debate

Articles

Separation of Acetaminophen, meets USP testing specifications, 98.0-102.0%, powder; Caffeine, meets USP testing specifications, anhydrous; Benzoic acid, meets USP testing specifications; Aspirin, meets USP testing specifications

Protocols

Separation of Acetylsalicylic acid, analytical standard; Salicylic acid, BioXtra, ≥99.0%

Separation of Salicylic acid, meets analytical specification of Ph. Eur., BP, USP, 99.5-100.5% (calc. to the dried substance); Acetylsalicylic acid, purum, ≥99.0% (HPLC)

Separation of 4-Hydroxybenzoic acid; Acetylsalicylic acid; Benzoic acid; Salicylic acid; Ethyl 4-hydroxybenzoate

HPLC Analysis of Benzoic Acid Derivatives on Ascentis® C18

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