27088

Chromoionophore III

Selectophore^™

• Synonym(s): 9-(Diethylamino)-5-[(2-octyldecyl)imino]benzo[a]phenoxazine, ETH 5350
• Empirical Formula (Hill Notation): C₃₈H₅₅N₃O
• CAS Number: 149683-18-1
• Molecular Weight: 569.86
• Beilstein: 5462368
• MDL number: MFCD00213937
• UNSPSC Code: 26111700
• PubChem Substance ID: 329752973
• NACRES: NB.61

Properties

• product line: Selectophore^™
• Quality Level: 200
• form: solid
• SMILES string: CCCCCCCCC(CCCCCCCC)C\N=C1/C=C2Oc3cc(ccc3N=C2c4ccccc14)N(CC)CC
• InChI: 1S/C38H55N3O/c1-5-9-11-13-15-17-21-30(22-18-16-14-12-10-6-2)29-39-35-28-37-38(33-24-20-19-23-32(33)35)40-34-26-25-31(27-36(34)42-37)41(7-3)8-4/h19-20,23-28,30H,5-18,21-22,29H2,1-4H3/b39-35+
• InChI key: ICVAQSQRYBGWQH-IGIMMJHKSA-N

Description

General description

Chromoionophore III (ETH 5350) is a pH sensitive dye, and is ratiometric that is the fluorescence spectrum has two peaks, and the ratio between these peaks changes according to the changing pH levels.

Visit our Sensor Applications portal to learn more.

Application

Selected application examples

ETH 5350 was used for the fabrication of optode membranes, which are sodium selective, used in order to optically determine sodium in pH-buffered human blood plasma.

Assay of Na⁺ activity with solvent polymeric optode membrane prepared from ETH 5350 and sodium ionophore V; Assay of ammonia with solvent polymeric optode membranes based on ETH 5350 and valinomycin (potassium ionophore I)

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Legal Information

Selectophore is a trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves