Europium chloride, anhydrous 99.9% → Thyroxine

HRID 257615

Reaction equation

HRID 257615 reaction equation
[Cl-].[Eu+3].[Cl-].[Cl-].[Na+].[NH2:6][C@H:7]([C:27]([O-:29])=[O:28])[CH2:8][C:9]1[CH:16]=[C:14]([I:15])[C:13]([O:17][C:18]2[CH:25]=[C:23]([I:24])[C:22]([OH:26])=[C:20]([I:21])[CH:19]=2)=[C:11]([I:12])[CH:10]=1>CN(C)C=O.C(O)C>[NH2:6][C@H:7]([C:27]([OH:29])=[O:28])[CH2:8][C:9]1[CH:10]=[C:11]([I:12])[C:13]([O:17][C:18]2[CH:19]=[C:20]([I:21])[C:22]([OH:26])=[C:23]([I:24])[CH:25]=2)=[C:14]([I:15])[CH:16]=1

Participants

5

Reactant 2

HCID 9859933Europium chloride, anhydrous 99.9%HCID 23666112Levothyroxine Sodium2×

Product 1

HCID 5819Thyroxine

Reagents, catalysts & solvents 2

HCID 702EthanolSolvent2×HCID 6228DimethylformamideSolvent

Procedure

Fluorescent compound (v) synthesized in Example 4 was dissolved in dimethylformamide at a concentration of 5.0×10-5M, and thyroxine sodium salt was dissolved in ethanol at a concentration of 5.0×10-5M. The fluorescent compound (v) solution (100 μl) and the thyroxine sodium salt solution (100 μl) of ethanol were mixed and incubated for 30 minutes at room temperature with stirring. The resulting solution was subjected to a HPLC purification (column: AP-313, YMC Co., solvent: methanol: water=3:7(v:v) including 0.02% acetic acid) and the fluorescent compound (v)-labelled thyroxine was purified. The fluorescent compound (v)-labelled thyroxine was identified by measuring the thyroxine activity using an enzyme immunoassay (Boehringer Mannheim GmbH), and by measuring fluorescence intensity of the solution prepared by mixing equal volume of europium chloride (1×10-5M) and the fraction.

Workup

  1. customThe resulting solution was subjected to a HPLC purification (column: AP-313, YMC Co., solvent: methanol: water=3:7(v:v)
  2. customwas purified
  3. customprepared

Sources & evidence

ORD record
ord-47de7a514e3547679a0e2c8e966c64ef
Source dataset
uspto-grants-1993_11
Patent number
US05262526

Linked notes

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