WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 558725

CAS#: 147776-06-5

Description: L-161982 is a selective inhibitor of the EP4 PGE2 receptor which enhances oxaliplatin-induced apoptosis in OXR cells, reduces expression of the colonic stem cell markers, CD133 and CD44, and inhibits tumor sphere formation.

Chemical Structure

CAS# 147776-06-5

Theoretical Analysis

MedKoo Cat#: 558725
Name: L-161982
CAS#: 147776-06-5
Chemical Formula: C32H29F3N4O4S2
Exact Mass: 654.1582
Molecular Weight: 654.72
Elemental Analysis: C, 58.70; H, 4.46; F, 8.71; N, 8.56; O, 9.77; S, 9.79

Price and Availability

Size Price Availability Quantity
1.0mg USD 210.0 2 Weeks
5.0mg USD 410.0 2 Weeks
10.0mg USD 665.0 2 Weeks
Bulk inquiry

Synonym: L 161982; L161982; L-161982

IUPAC/Chemical Name: N-[2-[4-[[3-Butyl-5-oxo-1-[2-(trifluoromethyl)phenyl]-1,2,4-triazol-4-yl]methyl]phenyl]phenyl]sulfonyl-3-methylthiophene-2-carboxamide


InChi Code: InChI=1S/C32H29F3N4O4S2/c1-3-4-13-28-36-39(26-11-7-6-10-25(26)32(33,34)35)31(41)38(28)20-22-14-16-23(17-15-22)24-9-5-8-12-27(24)45(42,43)37-30(40)29-21(2)18-19-44-29/h5-12,14-19H,3-4,13,20H2,1-2H3,(H,37,40)


Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO

Shelf Life: >3 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 654.72 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

Molarity Calculator

Calculate the mass, volume, or concentration required for a solution.

*When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and SDS / CoA (available online).

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Dilution Calculator

Calculate the dilution required to prepare a stock solution.

1: Yang L, Wei Y, Luo Y, Yang Q, Li H, Hu C, Yang Y, Yang J. Effect of PGE(2)-EP(s) pathway on primary cultured rat neuron injury caused by aluminum. Oncotarget. 2017 Sep 21;8(54):92004-92017. doi: 10.18632/oncotarget.21122. eCollection 2017 Nov 3. PubMed PMID: 29190893; PubMed Central PMCID: PMC5696159.

2: Chen L, Wu X, Zhong J, Li D. L161982 alleviates collagen-induced arthritis in mice by increasing Treg cells and down-regulating Interleukin-17 and monocyte-chemoattractant protein-1 levels. BMC Musculoskelet Disord. 2017 Nov 16;18(1):462. doi: 10.1186/s12891-017-1819-3. PubMed PMID: 29145862; PubMed Central PMCID: PMC5691865.

3: Gonzalez AA, Salinas-Parra N, Leach D, Navar LG, Prieto MC. PGE(2) upregulates renin through E-prostanoid receptor 1 via PKC/cAMP/CREB pathway in M-1 cells. Am J Physiol Renal Physiol. 2017 Oct 1;313(4):F1038-F1049. doi: 10.1152/ajprenal.00194.2017. Epub 2017 Jul 12. PubMed PMID: 28701311; PubMed Central PMCID: PMC5668586.

4: Cuppoletti J, Tewari KP, Chakrabarti J, Malinowska DH. Identification of the fatty acid activation site on human ClC-2. Am J Physiol Cell Physiol. 2017 Jun 1;312(6):C707-C723. doi: 10.1152/ajpcell.00267.2016. Epub 2017 Apr 19. PubMed PMID: 28424169.

5: Li X, Yang B, Han G, Li W. The EP4 antagonist, L-161,982, induces apoptosis, cell cycle arrest, and inhibits prostaglandin E2-induced proliferation in oral squamous carcinoma Tca8113 cells. J Oral Pathol Med. 2017 Nov;46(10):991-997. doi: 10.1111/jop.12572. Epub 2017 Apr 11. PubMed PMID: 28342204.

6: Wang R, Zhang W, Dong Z, Qi Y, Hultström M, Zhou X, Lai EY. c-Jun N-terminal Kinase mediates prostaglandin-induced sympathoexcitation in rats with chronic heart failure by reducing GAD1 and GABRA1 expression. Acta Physiol (Oxf). 2017 Feb;219(2):494-509. doi: 10.1111/apha.12758. Epub 2016 Aug 12. PubMed PMID: 27439062.

7: Li N, Zhang L, An Y, Zhang L, Song Y, Wang Y, Tang H. Antagonist of prostaglandin E2 receptor 4 induces metabolic alterations in liver of mice. J Proteome Res. 2015 Mar 6;14(3):1566-73. doi: 10.1021/pr501236y. Epub 2015 Feb 23. PubMed PMID: 25669961.

8: Wang F, Lu X, Peng K, Du Y, Zhou SF, Zhang A, Yang T. Prostaglandin E-prostanoid4 receptor mediates angiotensin II-induced (pro)renin receptor expression in the rat renal medulla. Hypertension. 2014 Aug;64(2):369-77. doi: 10.1161/HYPERTENSIONAHA.114.03654. Epub 2014 May 27. PubMed PMID: 24866147; PubMed Central PMCID: PMC4445967.

9: Stanley CP, O'Sullivan SE. Cyclooxygenase metabolism mediates vasorelaxation to 2-arachidonoylglycerol (2-AG) in human mesenteric arteries. Pharmacol Res. 2014 Mar;81:74-82. doi: 10.1016/j.phrs.2014.02.001. Epub 2014 Feb 16. PubMed PMID: 24548820; PubMed Central PMCID: PMC3992009.

10: FitzPatrick M, Donovan C, Bourke JE. Prostaglandin E2 elicits greater bronchodilation than salbutamol in mouse intrapulmonary airways in lung slices. Pulm Pharmacol Ther. 2014 Jun;28(1):68-76. doi: 10.1016/j.pupt.2013.11.005. Epub 2013 Nov 28. PubMed PMID: 24291048.

11: Yan G, Wang Q, Shi H, Han Y, Ma G, Tang C, Gu Y. Regulation of rat intrapulmonary arterial tone by arachidonic acid and prostaglandin E2 during hypoxia. PLoS One. 2013 Aug 27;8(8):e73839. doi: 10.1371/journal.pone.0073839. eCollection 2013. PubMed PMID: 24013220; PubMed Central PMCID: PMC3754945.