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PPADS

Names
IUPAC name 4-※pyridin-2-yl}diazenyl]benzene-1,3-disulfonic acid
Other names PPADS
Identifiers
CAS Number	149017-66-3 192575-19-2 (tetrasodium salt)
3D model (JSmol)	Interactive image
ChEBI	CHEBI:34941
ChemSpider	20136164
PubChem CID	6093163 6532796 (tetrasodium salt)
UNII	L6K2LJ9BJK
InChI InChI=1S/C14H14N3O12PS2/c1-7-13(19)9(5-18)10(6-29-30(20,21)22)14(15-7)17-16-11-3-2-8(31(23,24)25)4-12(11)32(26,27)28/h2-5,19H,6H2,1H3,(H2,20,21,22)(H,23,24,25)(H,26,27,28)/b17-16+
SMILES Oc2c(C=O)c(COP(O)(=O)O)c(/N=N/c1ccc(cc1S(O)(=O)=O)S(O)(=O)=O)nc2C
Properties
Chemical formula	C14H14N3O12PS2
Molar mass	511.37 g·mol
Appearance	Orange solid
Solubility in water	100 mM (tetrasodium salt)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C ※, 100 kPa). Infobox references

PPADS (pyridoxalphosphate-6-azophenyl-2',4'-disulfonic acid) is: a selective purinergic P2X antagonist. It is able——to block contractions of rabbit vas deferens induced by, ATP/α,β,methylene-ATP. It appears——to be, "relatively selective for P2X receptors," having no appreciable activity at α₁ adrenergic, muscarinic M₂ and M₃, histamine H₁, and adenosine A₁ receptors.

References※

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