| Bioactivity | JNJ-39758979 is a selective, orally active, and high-affinity histamine H4 receptor antagonist with Kis of 12.5, 5.3, and 25 nM for human, mouse, and monkey histamine H4 receptor, respectively. JNJ-39758979 functionally antagonizes histamine-induced cAMP inhibition with a pA2 of 7.9 in transfected cells. JNJ-39758979 shows good anti-inflammatory and antipruritic activity[1][2]. |
| Invitro | JNJ 39758979 is a selective, high-affinity histamine H4 receptor antagonist with a Ki of 12.5 nM versus the human H4 receptor and functionally antagonizes histamine-induced cAMP inhibition with a pA2 of 7.9 in transfected cells. At the mouse H4R, the Ki=5.3 nM and the pA2=8.3. At the monkey H4R, the Ki=25 nM and the pA2=7.5. The affinity for the rat (Ki=188 nM, pA2 = 7.2) and guinea pig H4R (Ki=306 nM) is moderate, and JNJ 39758979 has little if any affinity for the dog H4R (Ki≥10 μM). The compound is highly selective for H4R, as it exhibits low affinity for the H1, H2, and H3 receptors[1].JNJ-39758979 is metabolically stable (t1/2 >120 min) when incubated in vitro with human, rat, dog, or monkey liver microsomes[1]. |
| In Vivo | JNJ-39758979 (10 mg/kg; p.o.) treatment shows that the Cmax, t1/2 and F values are 0.3 μM, 7.5 hours, and 36%, respectively[1].JNJ-39758979 (2 mg/kg; i.v.) treatment shows that the Vss, AUC, CL and t1/2 were 19.9 L/kg, 1.4 μM*h, 2.2 L/h, and 2.1 hours, respectively [1]. Animal Model: |
| Name | JNJ-39758979 |
| CAS | 1046447-90-8 |
| Formula | C11H19N5 |
| Molar Mass | 221.30 |
| Appearance | Solid |
| Transport | Room temperature in continental US; may vary elsewhere. |
| Storage | 4°C, protect from light *In solvent : -80°C, 6 months; -20°C, 1 month (protect from light) |
| Reference | [1]. Savall BM, et al. Discovery and SAR of 6-alkyl-2,4-diaminopyrimidines as histamine H4 receptor antagonists. J Med Chem. 2014 Mar 27;57(6):2429-39. [2]. Murata Y, et al. Phase 2a, randomized, double-blind, placebo-controlled, multicenter, parallel-group study of a H4 R-antagonist (JNJ-39758979) in Japanese adults with moderate atopic dermatitis. |
JNJ-39758979
CAS: 1046447-90-8 F: C11H19N5 W: 221.30
JNJ-39758979 is a selective, orally active, and high-affinity histamine H4 receptor antagonist with Kis of 12.5, 5.3, an
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