Table 1 Spectroscopic and electronic parameters for CTCs of AVA with DDQ and CLA.

From: Sustainable high-throughput microwell spectrophotometric methods for avapritinib quality control via charge-transfer complexation

Parameters

AVA-DDQ

AVA-CLA

Wavelength, nm

460

520

Molar coefficient (ε), L mol−1 Cm−1

1.39 × 103

8.27 × 102

Association constant (K), L mol-1

6.5 × 102

3.77 × 102

Oscillator strength (f)

0.97

0.58

Transition dipole moment (μ, Debye)

0.25

0.15

Ionization potential (Ip), eV

9.11

8.70

Energy (hυ), eV

2.72

2.39

Resonance energy (RN), eV

0.03

0.02

Dissociation energy (W), eV

3.69

5.21

Gibbs free energy (ΔG°), kJ mole−1

− 16.05

− 14.70