PriceList for D-Pyroglutamic Acid - L-Cysteine S-Sulfate Na – Baishixing

Properties

storage conditions: Store at +15°C to +25°C.

biological source: synthetic

Form: powder or crystals

Packaging:

pkg of 1 kg

pkg of 5 kg

pkg of 10 kg

Solubility: water: soluble (Up to 1.3M (room temp))

Suitability: suitable for manufacturing use (cell culture media)

Storage temp.: room temp

Description

General description

Modified amino acids are inhouse manufactured amino acid derivatives with specific properties enabling the intensification of cell culture processes.

Together with the companion product Phospho-L-Tyrosine disodium Salt disodium salt, the new modified amino acid S-Sulfocysteine sodium salt can be used as replacement for cysteine to generate highly concentrated, neutral pH feeds. Both modified amino acids eliminate the need for alkaline feeds, which are normally applied to ensure solubility and stability of the unmodified amino acids tyrosine and cysteine.

Features and Benefits

Reduced complexity in fed-batch process

High concentrations of modified cysteine in main feeds at neutral pH

Prevention of caustic shocks in the bioreactor due to high pH feeds

More convenient preparation process with less contamination risks

Reduction of recombinant protein fragmentation and decrease in trisulfide bond content

Higher feed stability at room temperature