MSX-3

MSX-3
Clinical data

Drug class	Adenosine A_2A receptor antagonist
Identifiers
IUPAC name 3-[8-[(E)-2-(3-methoxyphenyl)ethenyl]-7-methyl-2,6-dioxo-1-prop-2-ynylpurin-3-yl]propyl dihydrogen phosphate
CAS Number	261705-79-7
PubChem CID	10256042
ChemSpider	8431526
UNII	72MRN83M4A
ChEMBL	ChEMBL1205720
Chemical and physical data
Formula	C₂₁H₂₃N₄O₇P
Molar mass	474.410 g·mol⁻¹
3D model (JSmol)	Interactive image
SMILES CN1C(=NC2=C1C(=O)N(C(=O)N2CCCOP(=O)(O)O)CC#C)/C=C/C3=CC(=CC=C3)OC
InChI InChI=1S/C21H23N4O7P/c1-4-11-25-20(26)18-19(24(21(25)27)12-6-13-32-33(28,29)30)22-17(23(18)2)10-9-15-7-5-8-16(14-15)31-3/h1,5,7-10,14H,6,11-13H2,2-3H3,(H2,28,29,30)/b10-9+ Key:DUCGTTGSVYZHJS-MDZDMXLPSA-N

MSX-3 is a selective adenosine A_2A receptor antagonist used in scientific research. Similarly to MSX-4, it is a water-soluble ester prodrug of MSX-2.