L(+)-Monosodium glutamate monohydrate (MSG monohydrate, L-Glutamic acid monosodium salt monohydrate, Monosodium L-glutamate monohydrate, Monosodium L-glutamate monohydrate) is a widespread nutritional additive and flavoring agent. L(+)-Monosodium glutamate monohydrate can lead to oxidative stress-mediated DNA damage and apoptosis.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.