What are the physical and chemical properties of (2S)-2-{[(9H-Fluoren-9-ylmethoxy)carbonyl]amino}-4-(methylselanyl)butanoic acid (CAS: 1217852-49-7)?

(2S)-2-{[(9H-Fluoren-9-ylmethoxy)carbonyl]amino}-4-(methylselanyl)butanoic acid is a white or off-white crystalline solid with a molecular weight of approximately 430.4 g/mol. It is sparingly soluble in water but more soluble in organic solvents like methanol and dichloromethane. This compound is highly reactive due to the presence of the fluorenylmethoxy carbonyl group, which can undergo various chemical transformations. It also exhibits good stability under neutral conditions, but caution should be exercised in acidic or basic environments.