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Impurities and reference standards

(-)-Etodolac

Also known as (R)-Etodolac, R-Etodolac, (R)-(-)-etodolac

CAS 87226-41-3Formula C17H21NO3Molar mass 287.36 g/mol
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(-)-Etodolac chemical structure, C17H21NO3, CAS 87226-41-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
87226-41-3
Formula
C17H21NO3
Molar mass
287.36 g/mol
HS code
293499
Category
Impurities and reference standards

What is (-)-Etodolac?

Plain description, key identifiers and synonyms

(R)-etodolac is the R-enantiomer of etodolac. It is inactive, in contrast to the enantiomer, (S)-etodolac, which is a preferential inhibitor of cyclo-oxygenase 2 and a non-steroidal anti-inflammatory. The racemate is commonly used for the treatment of rheumatoid arthritis and osteoarthritis, and for the alleviation of postoperative pain. It is an enantiomer of a (S)-etodolac.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-[(1R)-1,8-diethyl-4,9-dihydro-3H-pyrano[3,4-b]indol-1-yl]acetic acid
CAS number
87226-41-3 CAS number cross-checkedOther or deprecated CAS: 147170-18-1, 848873-99-4
Molecular formula
C17H21NO3
UNII
Y1RAH31T6K
MDL number
MFCD00870722
InChIKey
NNYBQONXHNTVIJ-QGZVFWFLSA-N
InChI
InChI=1S/C17H21NO3/c1-3-11-6-5-7-12-13-8-9-21-17(4-2,10-14(19)20)16(13)18-15(11)12/h5-7,18H,3-4,8-10H2,1-2H3,(H,19,20)/t17-/m1/s1
Canonical SMILES
CCc1cccc2c3c([nH]c12)C(CC)(CC(=O)O)OCC3
Isomeric SMILES
CCC1=C2C(=CC=C1)C3=C(N2)[C@@](OCC3)(CC)CC(=O)O

Synonyms

  • (R)-Etodolac
  • R-Etodolac
  • (R)-(-)-etodolac
  • Etodolac, (-)-
  • Etodolac, (R)-
  • (-)-Etodolic acid
  • (-)-(r)-etodolac
  • SDX 101
  • 2-[(1R)-1,8-diethyl-4,9-dihydro-3H-pyrano[3,4-b]indol-1-yl]acetic acid
  • [(1R)-1,8-diethyl-1,3,4,9-tetrahydropyrano[3,4-b]indol-1-yl]acetic acid
  • (-)-1,8-Diethyl-1,3,4,9-tetrahydropyrano(3,4-b)indole-1-acetic acid
  • (-)-[1,8-diethyl-1,3,4,9-tetrahydropyrano[3,4-b]indol-1-yl]acetic acid
  • Etodolac Impurity 16
  • (R)-2-(1,8-diethyl-1,3,4,9-tetrahydropyrano[3,4-b]indol-1-yl)acetic acid
  • Pyrano(3,4-b)indole-1-acetic acid, 1,3,4,9-tetrahydro-1,8-diethyl-, (R)-
  • Pyrano[3,4-b]indole-1-aceticacid, 1,8-diethyl-1,3,4,9-tetrahydro-, (1R)-
  • (R)-1,8-diethyl-1,3,4,9-tetrahydropyrano(3,4-b)indole-1-acetic acid
  • (1R)-1,8-Diethyl-1,3,4,9-tetrahydropyrano(3,4-b)indole-1-acetic acid
  • Pyrano(3,4-b)indole-1-acetic acid, 1,8-diethyl-1,3,4,9-tetrahydro-, (1R)-
  • Pyrano(3,4-b)indole-1-acetic acid, 1,8-diethyl-1,3,4,9-tetrahydro-, (R)-

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
287.36 g/molcalc.
Exact mass
287.1521 Dacalc.
LogP (octanol/water)
3.38calc.
Topological polar surface area
62.32 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
4calc.
Heavy atoms
21calc.
Rings
3calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.47calc.
Formal charge
0calc.
Stereocentres
1calc.
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, c1ccc2c3c([nH]c2c1)COCC3

c1ccc2c3c([nH]c2c1)COCC3

3 rings, 13 atoms.

67 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.

(-)-Etodolac suppliers

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(-)-Etodolac price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Roles

  • antineoplastic agent
  • pharmaceutical

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 (-)-Etodolac is traded under.

HS 2934.99Indicative HS code

Nucleic acids and their salts, other heterocyclic compounds, not elsewhere classified in heading 2934

World exports in 2024
$26.7B
+15.0% vs 2023, imports $26.3B
2019 to 2024
Top exporters
  1. Ireland26.3%
  2. China15.7%
  3. Singapore10.3%
Top importers
  1. United States24.5%
  2. Germany23.1%
  3. Japan4.5%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about (-)-Etodolac, based on the data on this page

What is (-)-Etodolac?

(R)-etodolac is the R-enantiomer of etodolac. It is inactive, in contrast to the enantiomer, (S)-etodolac, which is a preferential inhibitor of cyclo-oxygenase 2 and a non-steroidal anti-inflammatory.

What is the CAS number of (-)-Etodolac?

The CAS registry number of (-)-Etodolac is 87226-41-3. Other or deprecated CAS numbers: 147170-18-1, 848873-99-4.

What is the molecular formula and weight of (-)-Etodolac?

The molecular formula of (-)-Etodolac is C17H21NO3 and its molar mass is 287.36 g/mol.

What is (-)-Etodolac used for?

Known uses and roles of (-)-Etodolac include antineoplastic agent and pharmaceutical.

Is (-)-Etodolac hazardous?

No GHS hazard classification for (-)-Etodolac is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of (-)-Etodolac?

(-)-Etodolac is usually classified under HS code 293499 (Nucleic acids and their salts, whether or not chemically defined, other heterocyclic…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy (-)-Etodolac?

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What is the price of (-)-Etodolac?

Suppliers quote (-)-Etodolac on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

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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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