Toggle Nav


In stock
Catalog No.
Competitive gp120-CD4 interaction inhibitor
Grouped product items
SizePriceStock Qty
In stock
In stock
In stock

Tel: +1-832-696-8203

Email: [email protected]

Worldwide Distributors


YYA-021 is a small-molecule CD4 mimic that inhibits HIV entry [1].

CD4 is a cell surface protein. The entry of human immunodeficiency virus type 1 (HIV-1) into target cells is initiated by the interaction of CD4 and viral envelope glycoprotein gp120. CD4 mimic inhibits the interaction between gp120 and CD4 and then inhibits HIV entry [1].

YYA-021 is a small-molecule CD4 mimic that inhibits HIV entry. YYA-021 competitively inhibited gp120-CD4 interaction [1]. In TZM-bl cells infected with simian-human immunodeficiency virus isolate MNA (SHIV MNA) or HIV-1 MNA pseudotyped viruses, YYA-021 inhibited the entry of Envs of SHIV MNA and HIV-1. KD-247 (the anti-V3 loop mAb, 50 μg) caused 50% neutralization of HIV-1 MNA. However, in the presence of 20 μM of YYA-021, KD-247 (<0.05 μg) caused 50% neutralization of HIV-1 MNA, which suggested that the synergistic neutralization effect of YYA-021 and KD-247. In the presence of YYA-021, SHIV MNA became more sensitive to IgG [2].

In Jcl:SD rats, the maximum tolerated dose of YYA-021.HCl was 2.5 mg. When administrated by tail vein injection, YYA-021 exhibited widespread tissue distribution due to its hydrophobicity. In a rhesus macaque, the maximum tolerated dose of YYA-021.HCl was 35.3 mg [1].

[1].  Hashimoto C, Narumi T, Otsuki H, et al. A CD4 mimic as an HIV entry inhibitor: pharmacokinetics. Bioorg Med Chem, 2013, 21(24): 7884-7889.
[2].  Otsuki H, Hishiki T, Miura T, et al. Generation of a replication-competent simian-human immunodeficiency virus, the neutralization sensitivity of which can be enhanced in the presence of a small-molecule CD4 mimic. J Gen Virol, 2013, 94(Pt 12): 2710-2716.

Chemical Properties

StorageStore at -20°C
Cas No.144217-65-2
FormulaC18 H27 N3 O2
SolubilityLimited solubility
SDFDownload SDF
Canonical SMILESCC1=CC=C(C=C1)NC(=O)C(=O)NC2CC(NC(C2)(C)C)(C)C
Shipping ConditionEvaluation sample solution : ship with blue ice.All other available size: ship with RT , or blue ice upon request
General tipsFor obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.

Biological Activity

Description YYA-021 is a competitive inhibitor of the gp120-CD4 interaction.
Targets gp120-CD4 interaction          

Quality Control

Quality Control & MSDS

View current batch:

Chemical structure