L-Glutamine

Color: white to off-white.
Melting point: 185C (dec.). (lit.).

Biochemical / physiological behavior.
L-glutamine is an essential amino acid. As the main energy source in cell culture, L-glutamine has become an important component of the culture medium. L-glutamine is extremely stable in dry powder and frozen solution. However, L-glutamine degrades relatively quickly in liquid medium or stored solution. The best cell performance usually requires the addition of L-glutamine supplements to the culture medium before use.