SML2121

A-33

≥98% (HPLC)

• Synonym(s): 2-(4-{[2-(5-Chlorothiophen-2-yl)-5-ethyl-6-methylpyrimidin-4-yl]amino}phenyl)acetic acid, 2-[4-[[2-(5-Chloro-2-thienyl)-5-ethyl-6-methyl-pyrimidin-4-yl]amino]phenyl]acetic acid, 4-[[2-(5-Chloro-2-thienyl)-5-ethyl-6-methyl-4-pyrimidinyl]amino]-benzeneacetic acid, A33
• Empirical Formula (Hill Notation): C₁₉H₁₈ClN₃O₂S
• CAS Number: 915082-52-9
• Molecular Weight: 387.88
• UNSPSC Code: 51111800
• NACRES: NA.77

Properties

• Assay: ≥98% (HPLC)
• form: powder
• color: white to beige
• solubility: DMSO: 2 mg/mL, clear
• storage temp.: 2-8°C
• SMILES string: O=C(O)CC1=CC=C(NC2=NC(C3=CC=C(Cl)S3)=NC(C)=C2CC)C=C1

Description

Biochem/physiol Actions

A-33 (A33) is a potent and selective catalytic site-targeting PDE4B inhibitor (IC50 = 15 nM/PDE4B vs. 1.7 μM/PDE4D) that effectively prevents PDE4B-medicated cellular cAMP hydrolysis (150%/320% increased cAMP level with 100 nM/1 μM A-33 pre-treament in murine hippocampal HT-22 cells following 10 nM isoproterenol stimulation) in vitro and inhibits LPS-induced TNF-α production in mice in vivo (ID50 = 14 mg/kg p.o.). When administered via intraperitoneal injection, A-33 improves cognitive function in a rat model of traumatic brain injury (0.3 mg/kg i.p.) and exhibits antidepressant property in mice (0.3-1 mg/kg i.p.) in vivo.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3