Adriforant hydrochloride (PF-3893787 hydrochloride) is a novel histamine H4 receptor antagonist binding affinity (Ki=2.4 nM) and is also a functional (Ki=1.56 nM) antagonist.

Product information

CAS Number: 2096455-90-0

Molecular Weight: 371.74

Formula: C13H25Cl3N6

Chemical Name: N4-(cyclopropylmethyl)-6-[(3R)-3-(methylamino)pyrrolidin-1-yl]pyrimidine-2,4-diamine trihydrochloride

Smiles: Cl.Cl.Cl.CN[C@H]1CN(CC1)C1=CC(NCC2CC2)=NC(N)=N1

InChiKey: ZAZAFXLCZSALFI-FYBBWCNBSA-N

InChi: InChI=1S/C13H22N6.3ClH/c1-15-10-4-5-19(8-10)12-6-11(17-13(14)18-12)16-7-9-2-3-9;;;/h6,9-10,15H,2-5,7-8H2,1H3,(H3,14,16,17,18);3*1H/t10-;;;/m1.../s1

Technical Data

Appearance: Solid Power

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

Solubility: DMSO : ≥ 83.33 mg/mL (224.16 mM). H2O : 100 mg/mL (269.01 mM; Need ultrasonic).

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 ^oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 ^oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

Adriforant is tested and observed binding Ki=2.4 nM and functional Ki=1.56 nM for H4R. Data from functional assays produce convergent projections of the free plasma efficacious concentration and Adriforant (Compound 13) is fast on/fast off on rhH4R. The in vitro IC50 on human native isolated eosinophils assessing actin polymerisation is 1.16 nM and assuming need 10 times the IC50 for >90% receptor occupancy (and therefore near complete inhibition of the response) suggested a concentration of 12 nM. The data in the whole blood GAFS assay demonstrates that the imetit induced shape change is completely blocked at a total blood concentration of 30 nM (which correcting for PPB and blood partitioning equates to approximately 10 nM free). For the purpose of dose projection and safety margin calculation, a Ceff/Cmin concentration of 10-15 nM is used.

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