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PA-8

Catalog No. T41005Cas No. 878437-15-1

PA-8 is a small molecule receptor antagonist for PACAP Type I (PAC1) that is selective, effective, and orally active. PA-8 inhibits PacAP-induced CREB phosphorylation at PAC1- receptors, but does not inhibit VPAC1- or vpac2 receptors. PA-8 also inhibited PacAP-induced elevation of cAMP levels in vitro (IC50 = 2 nM) and PacAP-induced aversive response and mechanical atopic pain after intrathecal injection in vivo.

PA-8

PA-8

Purity: 97.64%
Catalog No. T41005Cas No. 878437-15-1
PA-8 is a small molecule receptor antagonist for PACAP Type I (PAC1) that is selective, effective, and orally active. PA-8 inhibits PacAP-induced CREB phosphorylation at PAC1- receptors, but does not inhibit VPAC1- or vpac2 receptors. PA-8 also inhibited PacAP-induced elevation of cAMP levels in vitro (IC50 = 2 nM) and PacAP-induced aversive response and mechanical atopic pain after intrathecal injection in vivo.
Pack SizePriceAvailabilityQuantity
5 mg$39In Stock
10 mg$72In Stock
25 mg$155In Stock
50 mg$272In Stock
100 mg$478In Stock
1 mL x 10 mM (in DMSO)$43In Stock
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Purity:97.64%
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Product Introduction

Bioactivity
Description
PA-8 is a small molecule receptor antagonist for PACAP Type I (PAC1) that is selective, effective, and orally active. PA-8 inhibits PacAP-induced CREB phosphorylation at PAC1- receptors, but does not inhibit VPAC1- or vpac2 receptors. PA-8 also inhibited PacAP-induced elevation of cAMP levels in vitro (IC50 = 2 nM) and PacAP-induced aversive response and mechanical atopic pain after intrathecal injection in vivo.
Targets&IC50
cAMP:2 nM
In vitro
In PAC1/CHO cells, PA-8 (10 pM to 10 nM; 30 minutes) dose-dependently inhibits PACAP (1 nM)-induced CREB phosphorylation. In VPAC1/CHO and VPAC2/CHO cells, PACAP (1 nM) also induces CREB phosphorylation; however, PA-8 (10 pM to 10 nM) does not inhibit this effect [1].
In vivo
Treatment with PA-8 (100 pmol/5 μL; via intrathecal injection; single dose; in male ddY mice) effectively suppresses PACAP-induced aversive reactions and mechanical allodynia in vivo [1]. Additionally, oral administration of PA-8 (3-30 mg/kg) leads to a dose-dependent reduction in the second phase of formalin-induced pain responses. PA-8 also significantly reduces c-fos expression in the spinal cord's ipsilateral dorsal horn [2]. This showcases PA-8's potential in mitigating nociceptive behaviors and neuronal activation in a PACAP-administered male ddY mouse model (6 weeks old; 100 pmol PACAP) [1], confirming its analgesic and anti-allodynic effects in vivo.
Chemical Properties
Molecular Weight342.35
FormulaC17H18N4O4
Cas No.878437-15-1
Storage & Solubility Information
StoragePowder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice.
Solubility Information
DMSO: 22.5 mg/mL (65.7 mM), Sonication and heating to 60℃ are recommended.
Solution Preparation Table
DMSO
1mg5mg10mg50mg
1 mM2.9210 mL14.6049 mL29.2099 mL146.0494 mL
5 mM0.5842 mL2.9210 mL5.8420 mL29.2099 mL
10 mM0.2921 mL1.4605 mL2.9210 mL14.6049 mL
20 mM0.1460 mL0.7302 mL1.4605 mL7.3025 mL
50 mM0.0584 mL0.2921 mL0.5842 mL2.9210 mL

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