Human SCF, accession # P21583, Glu26-Ala189
Lyophilized from a 0.2 µm-filtered solution containing 25 mM sodium phosphate, 150 mM sodium chloride and 1 mM EDTA, pH 7.4
Both product grades are produced under the same conditions in a GMP facility, ensuring an equal product quality and performance. We offer a more comprehensive QC testing including tighter specifications and documentation for our GMP products: Preclinical vs GMP.
|Molecular weight||19.4 kDa||19.4 kDa|
|Purity||≥ 95% as determined by SDS-PAGE||≥ 97% as determined by SDS-PAGE|
|Activity||≥ 0.5 x 106 IU/mg, calibrated against NIBSC #91/682 Measured in a cell proliferation assay using a SCF-dependent cell line, TF-1||0.5 – 2 x 106 IU/mg, calibrated against NIBSC #91/682 Measured in a cell proliferation assay using a SCF-dependent cell line, TF-1
Batch specific activity on CoA
|Endotoxin level||< 1000 EU/mg||≤ 50 EU/mg|
|Intended use||Intended for preclinical ex vivo use. Not intended for therapeutic use.||Intended for clinical ex vivo use. Not intended for human in vivo application.|
Recommended in sterile water to a final concentration of 250 µg/ml for 50 µg vials or 500 µg/ml for 1 mg vials.
≥ 6 months from date of shipping. Please refer to Certificate of Analysis for the exact expiry date.
Store lyophilized cytokine at -20°C to -80°C.
Store a 250 µg/ml reconstituted cytokine solution:
• 4 weeks at 2°C to 8°C under sterile conditions after reconstitution. Store in the original container.
• 4 months at -20°C to -80°C under sterile conditions after reconstitution. Store in 60 µl aliquots in polypropylene cryogenic vials.
Avoid repeated freeze/thaw cycles.