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Product information "Putrescine dihydrochloride (>98%)"
Specifications:
Assay (titr.): min. 98% (dried base)
Appearance: White to off-white crystaline powder or crystals
Solubility (10%, H2O): clear, colourless solution
Residue on Ignition: ≤0.2%
Heavy Metals: ≤20ppm
Loss on Drying: ≤0.5% (105°C)
C4H12N2 x 2HCl
MW = 161.08 g/mol
Safety Information:
Classification:
Documents:
Accessory Items
DNA extracted from salmon testes. To prevent unspecific binding of a DNA to the membrane in Southern- and Northern-Hybridisations salmon sperm DNA is added to the pre-hybridisation solution (Blotto, Denhardt's etc.). This Salmon Sperm DNA shows a low molecular weight. The lyophilised DNA can be dissolved in sterile bidistilled water (stock solution e. g. 10mg/mL) and stored at -20°C. This DNA is used with a final concentration of 100μg/mL (Ref.: Sambrook, J., et al., Molecular Cloning: A Laboratory Manual, Cold Spring Harbor, NY (1989), 9.48-9.49, 13.15. Silhavy, T., et al., Experiments with Gene Fusions, Cold Spring Harbor, NY (1984), 195.)