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

MedKoo CAT#: 561151

CAS#: 1219925-73-1

Description: E6446 inhibits Toll-like receptor (TLR)7 and 9 signaling. E6446 works in a variety of human and mouse cell types and inhibits DNA-TLR9 interaction in vitro. When administered to mice, this compound suppress responses to challenge doses of cytidine-phosphate-guanidine (CpG)-containing DNA, which stimulates TLR9.

Price and Availability




E6446 is not in stock, may be available through custom synthesis. For cost-effective reason, minimum 1 gram order is requested. The product will be characterized by NMR, HPLC and MS analysis. Purity (HPLC) is usually >98%. CoA, QC data, MSDS will be provided when product is successfully made. The estimated lead time is 2-3 months. Please send email to sales@medkoo.com to inquire quote.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 561151
Name: E6446
CAS#: 1219925-73-1
Chemical Formula: C27H35N3O3
Exact Mass: 449.2678
Molecular Weight: 449.595
Elemental Analysis: C, 72.13; H, 7.85; N, 9.35; O, 10.68

Synonym: E6446; E 6446; E-6446

IUPAC/Chemical Name: 6-(3-Pyrrolidin-1-yl-propoxy)-2-[4-(3-pyrrolidin-1-yl-propoxy)-phenyl]-benzooxazole


InChi Code: InChI=1S/C27H35N3O3/c1-2-14-29(13-1)17-5-19-31-23-9-7-22(8-10-23)27-28-25-12-11-24(21-26(25)33-27)32-20-6-18-30-15-3-4-16-30/h7-12,21H,1-6,13-20H2


Technical Data

Solid powder

>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).

Soluble in DMSO

Shelf Life:
>2 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).

Harmonized System Code:


1: Dias AA, Silva CO, Santos JP, Batista-Silva LR, Acosta CC, Fontes AN, Pinheiro RO, Lara FA, Machado AM, Nery JA, Sarno EN, Pereira GM, Pessolani MC. DNA Sensing via TLR-9 Constitutes a Major Innate Immunity Pathway Activated during Erythema Nodosum Leprosum. J Immunol. 2016 Sep 1;197(5):1905-13. doi: 10.4049/jimmunol.1600042. Epub 2016 Jul 29. PubMed PMID: 27474073.

2: Lamphier M, Zheng W, Latz E, Spyvee M, Hansen H, Rose J, Genest M, Yang H, Shaffer C, Zhao Y, Shen Y, Liu C, Liu D, Mempel TR, Rowbottom C, Chow J, Twine NC, Yu M, Gusovsky F, Ishizaka ST. Novel small molecule inhibitors of TLR7 and TLR9: mechanism of action and efficacy in vivo. Mol Pharmacol. 2014 Mar;85(3):429-40. doi: 10.1124/mol.113.089821. Epub 2013 Dec 16. PubMed PMID: 24342772.

3: Franklin BS, Ishizaka ST, Lamphier M, Gusovsky F, Hansen H, Rose J, Zheng W, Ataíde MA, de Oliveira RB, Golenbock DT, Gazzinelli RT. Therapeutical targeting of nucleic acid-sensing Toll-like receptors prevents experimental cerebral malaria. Proc Natl Acad Sci U S A. 2011 Mar 1;108(9):3689-94. doi: 10.1073/pnas.1015406108. Epub 2011 Feb 8. PubMed PMID: 21303985; PubMed Central PMCID: PMC3048158.