Formulation: A crystalline solid
Formal Name: 8-[4-[[4-(4-chlorophenyl)-1-piperazinyl]sulfonyl]phenyl]-3,9-dihydro-1-propyl-1H-purine-2,6-dione
Purity: ≥90%
Formula Markup: C24H25ClN6O4S
Formula Weight: 529
Shelf life (days): 1460
CAS Number: 1092351-10-4
Notes: PSB-603 is an antagonist of the adenosine A2B receptor (Ki = 0.553 nM).{42518} It is selective for adenosine A2B over A1, A2A, and A3 receptors (Kis = >10,000 nM). It reduces intracellular calcium concentrations in Jurkat T cells expressing the human A2B receptor (IC50 = 1.13 nM). PSB-603 reduces Zika viral plaque formation (IC50 = 43.8 nM) without affecting cell viability of A549 cells when used at concentrations up to 1 µM.{42519} In vivo, PSB-603 (0.25 µg/head, i.p.) delays tumor growth and reduces tumor volume and the number of pulmonary metastases in the B16 mouse model of melanoma via inhibition of induction of regulatory T cells.{42520}
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