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Bufexamac

pharmaceutical raw materials
Bufexamac structure

Bufexamac 

structure
  • CAS No:

    2438-72-4

  • Formula:

    C12H17NO3

  • Chemical Name:

    Bufexamac

  • Synonyms:

    Benzeneacetamide,4-butoxy-N-hydroxy-;Acetohydroxamic acid,2-(p-butoxyphenyl)-;4-Butoxy-N-hydroxybenzeneacetamide;CP 1044J3;p-Butoxyphenylacethydroxamic acid;4-Butoxyphenylacethydroxamic acid;p-Butoxyphenylacetohydroxamic acid;Droxaryl;Bufexamac;2-(p-Butoxyphenyl)acetohydroxamic acid;Bufexamic acid;Droxarol;Flogocid;Flogocid N plastigel;Parfenal;Parfenac;Anderm;Mofenar;Malipuran;Feximac;Norfemac;Trolab;2-(4-Butoxyphenyl)acetohydroxamic acid;2-(4-Butoxyphenyl)-N-hydroxyacetamide

  • Categories:

    Organic Chemistry  >  Amides

Description

Bufexamac is a class IIB histone deacetylases (HDAC6 and HDAC10) inhibitor used as an anti-inflammatory agent.


Bufexamac is a hydroxamic acid derived from phenylacetamide in which the benzene moiety is substituted at C-4 by a butoxy group. It has anti-inflammatory, analgesic, and antipyretic properties. It has a role as a non-narcotic analgesic, a non-steroidal anti-inflammatory drug and an antipyretic. It is a hydroxamic acid and an aromatic ether.|Bufexamac is a non-steroidal anti-inflammatory drug (NSAID) under the market name Droxaryl, Malipuran, Paraderm and Parfenac. It is typically administered topically for the treatment of subacute and chronic eczema of the skin, including atopic eczema and other inflammatory dermatoses, as well as sunburn and other minor burns, and itching. It has also been used in suppositories in combination with local anaesthetics indicated for haemorrhoids. The use of bufexamac has been discontinued in Canada and the United States, which may be due to undetermined clinical efficacy and a high prevalence of contact sensitization. Bufexamac was also withdrawn by the EMA in April 2010.|A benzeneacetamide with anti-inflammatory, analgesic, and antipyretic action. It is administered topically, orally, or rectally.

Bufexamac Basic Attributes

223.27

223.27

219-451-1

4T3C38J78L

758153

DTXSID7045368

M - Musculo-skeletal system

2924299090

Characteristics

58.6

1.9

Acicular crystal

1.1±0.1 g/cm3

154 °C

1.530

H2O: Immiscible

Oral-rat LD50: 3370 mg/kg; Oral-Mouse LD50: 8000 mg/kg

Thermal decomposition to emit toxic nitrogen oxide fumes

161 Ų [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine and drug standards]

Safety Information

NONH for all modes of transport

2

AK8280000

Warehouse ventilated, low temperature and dry

Stable at normal temperatures and pressures.

P261, P264, P270, P272, P280, P301+P312, P302+P352, P321, P330, P333+P313, P363, P501

H302

|Warning|H302 (50%): Harmful if swallowed [Warning Acute toxicity, oral]|P261, P264, P270, P272, P280, P301+P312, P302+P352, P321, P330, P333+P313, P363, and P501|Aggregated GHS information provided by 3 companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Toxicity

moderately toxic

The LD50 in rat following oral and intraperitoneal administration is 3370 mg/kg and 805 mg/kg, respectively [MSDS]. Subcutaneous LD50 in mouse is >5000 mg/kg [MSDS]. Mild skin irritation was seen in rabbits following dermal application of 750 mg/30d(l) [MSDS]. Non-steroidal anti-inflammatory drug (NSAID) overdose may produce nausea, vomiting, indigestion and upper abdominal pain. Other effects may include drowsiness, dizziness, confusion, disorientation, lethargy [MSDS].

No data available.

Drug Information

Indicated for the treatment of various skin conditions, such as atopic eczema and other inflammatory dermatoses.

Bufexamac is a topically-active anti-inflammatory agent that inhibits the cyclooxygenase enzyme. In cutaneous and deep experimental inflammation, topical administration of bufexamac exerted a dose-related anti-inflammatory effect. In guinea pigs, bufexamax was shown to be more active than topical acetylsalicylic acid 5% or phenylbutazone 5% in delaying the local increase in temperature resulting from UV exposure. Bufexamac is unlikely to have any effect on wound healing.

Anti-inflammatory agents that are non-steroidal in nature. In addition to anti-inflammatory actions, they have analgesic, antipyretic, and platelet-inhibitory actions.They act by blocking the synthesis of prostaglandins by inhibiting cyclooxygenase, which converts arachidonic acid to cyclic endoperoxides, precursors of prostaglandins. Inhibition of prostaglandin synthesis accounts for their analgesic, antipyretic, and platelet-inhibitory actions; other mechanisms may contribute to their anti-inflammatory effects. (See all compounds classified as Anti-Inflammatory Agents, Non-Steroidal.)

Method of application affects the extent of cutaneous absorption. Following rectal administration as suppositories, the systemic absorption was reported to be low.|Following topical administration of 5% bufexamac, the recovery in the urine was 3.5% of the applied dose within 144 hours. Studies in healthy volunteers receiving an oral dose of 125 to 500 mg indicate that an average of 80% of the total dose is excreted in the urine within 48 hours.|No data available.

No data available.

No data available.

The full mechanism of action is unclear. It is proposed that bufexamac acts similarly to other non-steroidal anti-inflammatory drugs to inhibit prostaglandin biosynthesis _in vitro_, via inhibiting cyclo-oxygenase (COX) enzymes. Systematically administered bufexamac may accumulate preferentially in the adrenal cortex of rats and may play a role in adrenal stimulation; however its topical anti-inflammatory action is likely to be independent of this effect.

Allergipuran

Bufexamac Use and Manufacturing

Uses

antiinflammatory, analgesic, antipyretic

Pharmaceuticals

Computed Properties

Molecular Weight:223.27
XLogP3:1.9
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:3
Rotatable Bond Count:6
Exact Mass:223.12084340
Monoisotopic Mass:223.12084340
Topological Polar Surface Area:58.6
Heavy Atom Count:16
Complexity:200
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Drug Function and Efficacy

This product has anti-inflammatory and analgesic effects. When applied externally, it can reach a high concentration in local tissues, but rarely enters the systemic circulation.

This ingredient has been used in drugs with the following functions (note: it does not mean that the ingredient itself has the following health functions)

Related Drugs

Registered Holders

  • Hunan Dino Pharmaceutical Co., Ltd.

    China China
    Active
  • BENECHIM S.P.R.L.

    European Union European Union
    Inactive

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