QUIN 2, Tetrapotassium Salt

QUIN 2, Tetrapotassium Salt has been demonstrated to be an indicator of Zn|2+|-protein complexes.The binding of Ca|2+|to QUIN 2 leads to a major shift in UV absorption spectrum and a twenty-fold enhancement in fluorescence quantum yield. TPEN can be used in conjunction with QUIN 2 to reduce heavy-metal quenching of QUIN 2 fluorescence in cells. Spectral properties in the presence of low calcium concentrations (ex. 354 nm, em. 510 nm) differ from those during high calcium conditions (ex. 332 nm, em. 505 nm). Molecular Formula: C26H23N3O104K Molecular Weight: 693.9 PubChem CID: 135539 Isomeric SMILES: CC1=CC(=C(C=C1)N(CC(=O)[O-])CC(=O)[O-])OCC2=NC3=C(C=C(C=C3C=C2)OC)N(CC(=O)[O-])CC(=O)[O-].[K+].[K+].[K+].[K+] Beilstein Registry Number: 5374262 Related Documents: https://ald-pub-files.oss-cn-shanghai.aliyuncs.com/aladdinsci/pdp/sds/1/Q331457-SCI_b50c178e9d8bc1c7e09de00bf28a1a21.pdf