What are the physical and chemical properties of (S)-2,3-Diaminopropanoic acid dihydrochloride (CAS: 19777-68-5)?

(S)-2,3-Diaminopropanoic acid dihydrochloride, also known as (S)-Diaminopropanoic acid dihydrochloride, is a white crystalline solid with a molecular weight of approximately 228.79 g/mol. It is highly soluble in water and has good solubility in organic solvents. This compound is known for its reactivity, particularly in its ability to form amide bonds under certain conditions. It has a pKa of about 9.8, indicating basic properties. It is commonly used in organic synthesis and biochemistry due to its functional groups.