4-Hydroxyacetophenone oxime

Also known as: p-Hydroxyacetophenone oxime, Ethanone, 1-(4-hydroxyphenyl)-, oxime, 4-[1-(hydroxyamino)ethylidene]cyclohexa-2,5-dien-1-one, 1-(4-Hydroxyphenyl)ethanone oxime, NSC 77904, Acetaminophen Impurity G, Paracetamol Impurity G, Acetaminophen EP Impurity G, 4'-Hydroxyacetophenone oxime

4-Hydroxyacetophenone oxime (CAS 34523-34-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H9NO2 and a molecular weight of 151.16300 g/mol. Key properties include a melting point of 143 °C, a boiling point of 294.8ºC at 760mmHg, a density of 1.246g/cm3 and a flash point of 132.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 34523-34-7
Jingsj CID: J-1977433-5
Molecular Formula: C₈H₉NO₂
Molecular Weight: 151.16300 g/mol
Category: Ketones
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point	143 °C
Boiling Point	294.8ºC at 760mmHg
Density	1.246g/cm3
Flash Point	132.1ºC
Exact Mass	151.06300
PSA	52.82000
LogP	1.59040
Refractive Index	1.591

Activity & Biological Data

Additional Information	[1]. Hinz, B, et al. Acetaminophen (paracetamol) is a selective cyclooxygenase-2 inhibitor in man. FASEB J, 2008. 22(2): p. 383-90. [2]. Rothen JP, et al. Acetaminophen is an inhibitor of hepatic N-acetyltransferase 2 in vitro and in vivo. Pharmacogenetics. 1998 Dec;8(6):553-9.

Customs & Trade Information

HS Code	2928000090
Summary	2928000090 other organic derivatives of hydrazine or of hydroxylamine VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 4-Hydroxyacetophenone oxime?

The CAS number of 4-Hydroxyacetophenone oxime is 34523-34-7.

What are the molecular formula and molecular weight of 4-Hydroxyacetophenone oxime?

4-Hydroxyacetophenone oxime has molecular formula C8H9NO2 and molecular weight 151.16300 g/mol.

What are the upstream and downstream products of 4-Hydroxyacetophenone oxime?

For 4-Hydroxyacetophenone oxime, Upstream Products: 4'-Hydroxyacetophenone, Acetophenone, 4-Hydroxy-N-methylbenzamide; Downstream Products: 4'-Hydroxyacetophenone, Acetaminophen, 4-Hydroxybenzoic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "4-Hydroxyacetophenone oxime (CAS 34523-34-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1977433-5 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.