UNC9994

Modify Date: 2025-08-25 12:16:43

UNC9994 Structure
UNC9994 structure
Common Name UNC9994
CAS Number 1354030-51-5 Molecular Weight 421.38
Density N/A Boiling Point N/A
Molecular Formula C21H22Cl2N2OS Melting Point N/A
MSDS N/A Flash Point N/A

 Use of UNC9994


UNC9994, an analog of Aripiprazole, is a functionally selective β-arrestin-biased dopamine D2 receptor (D2R) agonist with EC50 <10 nM for β-arrestin-2 recruitment to D2 receptors. UNC9994 is simultaneously partial agonists of β-arrestin-2 translocation and antagonists of Gi-regulated cAMP production. Antipsychotic Activity[1].

 Names

Name UNC9994

 UNC9994 Biological Activity

Description UNC9994, an analog of Aripiprazole, is a functionally selective β-arrestin-biased dopamine D2 receptor (D2R) agonist with EC50 <10 nM for β-arrestin-2 recruitment to D2 receptors. UNC9994 is simultaneously partial agonists of β-arrestin-2 translocation and antagonists of Gi-regulated cAMP production. Antipsychotic Activity[1].
Related Catalog
Target

D2 Receptor:79 nM (Ki)

D3 Receptor:17 nM (Ki)

D4 Receptor:138 nM (Ki)

5-HT2A Receptor:140 nM (Ki)

5-HT2B Receptor:25 nM (Ki)

5-HT2C Receptor:512 nM (Ki)

5-HT1F Receptor:26 nM (Ki)

H1-histamine receptor:2.4 nM (Ki)

H1-histamine receptor:79 (pA2)

In Vitro UNC9994 displays a lower binding affinity (Ki=79 nM) to D2R than UNC9975, UNC0006, and aripiprazole. At serotonin (as known as 5-HT) receptors, UNC9994 displays moderate to high binding affinities (Ki=25-512 nM) for 5HT2A, 5HT2B, 5HT2C, and 5HT1A, but is significantly less potent in functional assays (Ca2+ mobilization FLIPR or cAMP biosensor). UNC9994 is an antagonist at 5HT2A and 5HT2B and agonists at 5HT2C and 5HT1A. UNC9994 has relatively high affinities to H1-histamine receptor (Ki=2.4 nM) but is less potent antagonists in H1 functional assays[1].
In Vivo The antipsychotic-like activity displayed by UNC9994 (2 mg/kg; i.p.) in wild-type mice is completely abolished in β-arrestin-2 knockout mice[1]. Animal Model: C57BL/6J wild-type and β-arrestin-2 knockout mice (phencyclidine-induced hyperlocomotion)[1] Dosage: 2 mg/kg Administration: I.p. followed 30 min later with 6 mg/kg phencyclidine Result: Markedly inhibited PCP-induced hyperlocomotion in wild-type mice. This significant antipsychotic-like activity of UNC9994 was completely abolished in β-arrestin-2 knockout mice.
References

[1]. Allen JA, et al. Discovery of β-arrestin-biased dopamine D2 ligands for probing signal transduction pathways essential for antipsychotic efficacy. Proc Natl Acad Sci U S A. 2011;108(45):18488-18493.

 Chemical & Physical Properties

Molecular Formula C21H22Cl2N2OS
Molecular Weight 421.38
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