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Acetaminophen

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

Acetaminophen, 4′-Hydroxyacetanilide, 4-Acetamidophenol, N-(4-Hydroxyphenyl)acetamide, N-Acetyl-4-aminophenol, APAP, Paracetamol

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About This Item

Linear Formula:
CH3CONHC6H4OH
CAS Number:
103-90-2
Molecular Weight:
151.16
Beilstein:
2208089
MDL number:
MFCD00002328
UNSPSC Code:
41116107
PubChem Substance ID:
329748124
NACRES:
NA.24

grade

pharmaceutical primary standard

API family

acetaminophen, paracetamol

manufacturer/tradename

USP

mp

168-172 °C (lit.)

application(s)

pharmaceutical (small molecule)

format

neat

SMILES string

CC(=O)Nc1ccc(O)cc1

InChI

1S/C8H9NO2/c1-6(10)9-7-2-4-8(11)5-3-7/h2-5,11H,1H3,(H,9,10)

InChI key

RZVAJINKPMORJF-UHFFFAOYSA-N

Gene Information

human ... FAAH(2166) , PTGS1(5742) , PTGS2(5743) , TRPV1(7442)

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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

Acetaminophen USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia.
Also, for use with USP monographs such as:
  • Acetaminophen Tablets
  • Acetaminophen Capsules
  • Acetaminophen Suppositories
  • Acetaminophen Oral Suspension
  • Acetaminophen Oral Solution
  • Acetaminophen and Caffeine Tablets
  • Acetaminophen Extended-Release Tablets

Analgesic.

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
GHS07

Signal Word

Warning

Hazard Statements

H302

Precautionary Statements

P264 - P270 - P301 + P312 - P501

Hazard Classifications

Acute Tox. 4 Oral

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

364.3 °F - Pensky-Martens closed cup

Flash Point(C)

184.6 °C - Pensky-Martens closed cup

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’.

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Acetaminophen
USP43-NF38: United States Pharmacopeia and National Formulary
United States Pharmacopeia, 39(6), 38-38 (2020)
Acetaminophen tablets
USP43-NF38: United States Pharmacopeia and National Formulary
United States Pharmacopeia, 43(3), 45-45 (2021)
Mitchell R McGill et al.
Pharmaceutical research, 30(9), 2174-2187 (2013-03-07)
Acetaminophen (APAP) is one of the most widely used drugs. Though safe at therapeutic doses, overdose causes mitochondrial dysfunction and centrilobular necrosis in the liver. The first studies of APAP metabolism and activation were published more than 40 years ago.
Garry G Graham et al.
Inflammopharmacology, 21(3), 201-232 (2013-05-31)
Paracetamol is used worldwide for its analgesic and antipyretic actions. It has a spectrum of action similar to that of NSAIDs and resembles particularly the COX-2 selective inhibitors. Paracetamol is, on average, a weaker analgesic than NSAIDs or COX-2 selective
Karel Allegaert et al.
Archives of disease in childhood, 98(6), 462-466 (2013-04-23)
There remains a need for alternative medical treatments for patent ductus arteriosus (PDA) closure in extreme preterm neonates because of therapeutic failure and adverse effects associated with non-selective cyclo-oxygenase inhibitors. Reports of an association between paracetamol exposure and PDA closure
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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

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