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Aromatic building blocks

Oxybuprocaine

Also known as Benoxinate, Oxybucaine, 2-(Diethylamino)ethyl 4-amino-3-butoxybenzoate

CAS 99-43-4Formula C17H28N2O3Molar mass 308.42 g/mol
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Oxybuprocaine chemical structure, C17H28N2O3, CAS 99-43-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
99-43-4
Formula
C17H28N2O3
Molar mass
308.42 g/mol
HS code
292250
Category
Aromatic building blocks

What is Oxybuprocaine?

Plain description, key identifiers and synonyms

Oxybuprocaine is a benzoate ester in which 4-amino-3-butoxybenzoic acid and 2-(diethylamino)ethanol have combined to form the ester bond, an ester-based local anaesthetic (ester "caine") used especially in ophthalmology and otolaryngology. It has a role as a local anaesthetic, a topical anaesthetic and a drug allergen. It is a benzoate ester, an amino-acid ester, a substituted aniline and a tertiary amino compound. It is functionally related to a 2-diethylaminoethanol.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-(diethylamino)ethyl 4-amino-3-butoxybenzoate
CAS number
99-43-4 CAS number cross-checked
Molecular formula
C17H28N2O3
UNII
AXQ0JYM303
MDL number
MFCD00242863
InChIKey
CMHHMUWAYWTMGS-UHFFFAOYSA-N
InChI
InChI=1S/C17H28N2O3/c1-4-7-11-21-16-13-14(8-9-15(16)18)17(20)22-12-10-19(5-2)6-3/h8-9,13H,4-7,10-12,18H2,1-3H3
SMILES (canonical and isomeric)
CCCCOC1=C(C=CC(=C1)C(=O)OCCN(CC)CC)N

Synonyms

  • Benoxinate
  • Oxybucaine
  • 2-(Diethylamino)ethyl 4-amino-3-butoxybenzoate
  • Oxibuprokain
  • Oxyriprocaine
  • Conjucain
  • Dorsacain
  • Oxibuprocaina
  • Oxybuprocainum
  • Butoxyaminobenzoyldiethylaminoethanol
  • Monofree oxybuprocaine
  • Benzoic acid, 4-amino-3-butoxy-, 2-(diethylamino)ethyl ester
  • 4-Amino-3-butoxy-2-(diethylamino)ethyl ester benzoic acid
  • 4-Amino-3-n-butoxy-benzoesaeure-diaethylaminoaethylester
  • 4-Amino-3-butoxy-benzoic acid 2-diethylamino-ethyl ester
  • butoxyprocaine
  • diethylaminoethyl-4-amino-3-butoxybenzoate
  • Oxibuprocainum
  • Prescaina
  • Novesinol
  • Novesin
  • Oxybuprocaine (INN)
  • 4-Amino-3-butoxybenzoic acid 2-diethylaminoethyl ester
  • 2-(Diethylamino)ethyl 4-amino-3-butoxy-benzoate
  • 3-Butoxy-4-aminobenzoic acid 2-diethylaminoethyl ester
Show all 33 synonyms
  • Benzoic acid, 4-amino-3-butoxy-, 2-(diethylamino)ethyl ester, hydrochloride
  • Benoxinate, Conjucain, Dorsacain, Novesinol, Oxybucaine
  • 2-Diethylaminoethyl 4-amino-3-butoxybenzoate
  • 4-Amino-3-butoxybenzoic acid 2-(diethylamino)ethyl ester
  • Monofree oxybuprocaine (TN)
  • BNX
  • Minims Oxybuprocaine
  • 3-Butoxy-4-aminobenzoic acid 2-(diethylamino)ethyl ester

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
308.42 g/molcalc.
Exact mass
308.21 Dacalc.
LogP (octanol/water)
2.95calc.
Topological polar surface area
64.79 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
10calc.
Heavy atoms
22calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.59calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Oxybuprocaine suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 6 suppliers
6 of 6 offers

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Where suppliers are based

6 suppliers in 4 countries

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Oxybuprocaine price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Use classes: Pharmaceuticals.

Pharmacological actions

  • Anesthetics, Local

Roles

  • aetiopathogenetic role
  • allergen
  • anaesthetic
  • drug allergen
  • local anaesthetic
  • pharmaceutical
  • topical anaesthetic

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Oxybuprocaine is traded under.

HS 2922.50Indicative HS code

Amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function

World exports in 2024
$3.29B
−5.9% vs 2023, imports $3.19B
2019 to 2024
Top exporters
  1. China39.2%
  2. United Kingdom27.1%
  3. India * partner reported4.8%
Top importers
  1. United States20.7%
  2. Germany7.6%
  3. Italy6.6%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Oxybuprocaine is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Oxybuprocaine, based on the data on this page

What is Oxybuprocaine?

Oxybuprocaine is a benzoate ester in which 4-amino-3-butoxybenzoic acid and 2-(diethylamino)ethanol have combined to form the ester bond, an ester-based local anaesthetic (ester "caine") used especially in ophthalmology and otolaryngology. It has a role as a local anaesthetic, a topical anaesthetic and a drug allergen.

Guides for buyers

Practical guides that help when you source, ship or handle Oxybuprocaine

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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