8-Aminopyrene-1,3,6-trisulfonic Acid (sodium salt)

8-Aminopyrene-1,3,6-trisulfonic acid (APTS) is an anionic fluorescent dye with excitation/emission spectra of 425/503 nm, respectively. It forms a ground state complex with viologen-type quenchers, inducing a red-shift in the absorbance spectrum from 425 to 464 nm. APTS is pH insensitive, with the emission maximum remaining constant over the pH range of 4-10. It can be used in solution or immobilized through attachment of an aldehyde functionalized monomer by reductive amination without significantly changing fluorescence intensity. APTS has been used as a reporter for glucose sensing and for the detection of other saccharides.Formal Name: 8-amino-1,3,6-pyrenetrisulfonic acid, trisodium salt. CAS Number: 196504-57-1. Synonyms: APTS. Molecular Formula: C16H8NO9S3 . 3Na. Formula Weight: 523.4. Purity: >95%. Emission: 503 nm. Excitation: 425 nm. Formulation: (Request formulation change), A crystalline solid. Solubility: DMF: 0.2 mg/ml, DMSO: 2 mg/ml, PBS (pH 7.2): 10 mg/ml. lambdamax: 203, 435 nm. SMILES: NC1=CC(S([O-])(=O)=O)=C(C=C2)C3=C(C2=C(S([O-])(=O)=O)C=C4S([O-])(=O)=O)C4=CC=C31.[Na+].[Na+].[Na+]. InChi Code: InChI=1S/C16H11NO9S3.3Na/c17-11-5-12(27(18,19)20)8-3-4-10-14(29(24,25)26)6-13(28(21,22)23)9-2-1-7(11)15(8)16(9)10,,,/h1-6H,17H2,(H,18,19,20)(H,21,22,23)(H,24,25,26),,,/q,3*+1/p-3. InChi Key: XSTNYACEWLNWPY-UHFFFAOYSA-K.