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Details

Stereochemistry ABSOLUTE
Molecular Formula C17H21NO3
Molecular Weight 287.3535
Optical Activity UNSPECIFIED
Defined Stereocenters 1 / 1
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of ETODOLAC, (R)-

SMILES

CCC1=CC=CC2=C1NC3=C2CCO[C@]3(CC)CC(O)=O

InChI

InChIKey=NNYBQONXHNTVIJ-QGZVFWFLSA-N
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

HIDE SMILES / InChI

Molecular Formula C17H21NO3
Molecular Weight 287.3535
Charge 0
Count
MOL RATIO 1 MOL RATIO (average)
Stereochemistry ABSOLUTE
Additional Stereochemistry No
Defined Stereocenters 1 / 1
E/Z Centers 0
Optical Activity UNSPECIFIED

Description

R-etodolac (SDX-101) is the non-cyclooxygenase 2-inhibiting R-enantiomer of the non-steroid anti-inflammatory drug etodolac (1,8-diethyl-1,3,4,9-tetrahydropyrano[3,4-b]indole-1-acetic acid). The absolute configuration of the enantiomer is R-(-)-etodolac. R-etodolac specifically bound retinoid X receptor (RXRalpha), inhibited RXRalpha transcriptional activity, and induced its degradation by a ubiquitin and proteasome-dependent pathway. In addition R-etodolac can disrupt the beta-catenin signaling pathway. R-etodolac exerts antineoplastic properties. R-etodolac was in phase 2 studies for the treatment of hematologic malignancies however development was discontinued.

CNS Activity

Originator

Approval Year

Targets

Primary TargetPharmacologyConditionPotency
200.0 µM [IC50]
200.0 µM [IC50]

Conditions

ConditionModalityTargetsHighest PhaseProduct
Primary
Unknown
Primary
Unknown

Cmax

ValueDoseCo-administeredAnalytePopulation
85.1 μg/mL
1200 mg 2 times / day multiple, oral
ETODOLAC, (R)- plasma
Homo sapiens
106.4 μg/mL
2400 mg 2 times / day multiple, oral
ETODOLAC, (R)- plasma
Homo sapiens

AUC

ValueDoseCo-administeredAnalytePopulation
543.3 μg × h/mL
1200 mg 2 times / day multiple, oral
ETODOLAC, (R)- plasma
Homo sapiens
768.7 μg × h/mL
2400 mg 2 times / day multiple, oral
ETODOLAC, (R)- plasma
Homo sapiens

T1/2

ValueDoseCo-administeredAnalytePopulation
5.76 h
1200 mg 2 times / day multiple, oral
ETODOLAC, (R)- plasma
Homo sapiens
4.94 h
2400 mg 2 times / day multiple, oral
ETODOLAC, (R)- plasma
Homo sapiens

Drug as perpetrator​

Drug as victim

PubMed

Sample Use Guides

In Vivo Use Guide
Phase 2, multi-center, open label, randomized clinical study for the treatment chronic lymphocytic leukaemia: R-etodolac 600mg tablets + chlorambucil 2mg tablets for 24-26 weeks
Route of Administration: Oral
In Vitro Use Guide
R-etodolac induced significant cytotoxicity in MM.1S, U266, RPMI8226, INA-6, and OPM1 MM cell lines with IC50 of 0.49, 1.06, 0.54, 0.22, and 0.47 mM, respectively. R-etodolac also triggers cytotoxicity, with IC50 of 0.62, 0.76 and 0.62 mM, respectively, in Dex-resistant MM.1R, Dox-resistant RPMI-Dox40, and bortezomib-resistant DHL4 cells32. Importantly, R-etodolac does not induce cytotoxicity in PBMCs from 3 healthy volunteers with concentrations as high as 2.5 mM
Substance Class Chemical
Record UNII
Y1RAH31T6K
Record Status Validated (UNII)
Record Version