Heliovicine
Reference standards.
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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(2-8C).
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 -20C. Generally, these will be useable for up to two weeks. 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.
Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Phytochemistry,1997,46(5): 845–853.
Bioactive saturated pyrrolizidine alkaloids from Heliotropium floridum[Reference:
WebLink]
METHODS AND RESULTS:
Here we describe the isolation and structural determination of the new saturated pyrrolizidine monoester alkaloids, 3′-acetyltrachelanthamine, floridine, floridinine and floridimine, along with the known one, Heliovicine, from Heliotropium floridum. Their structures were established by high resolution NMR (including 2D NMR experiments), mass spectrometry, chemical reactions and by correlation with published data of known compounds.
CONCLUSIONS:
Bioassays of the alkaloidal extract and its major components against several insect pests and plant pathogens showed that 3′-acetyltrachelanthamine is a strong anti-feedant, with low toxicity against Leptinotarsa decemlineata and a moderate anti-fungal agent against Fusarium monoliforme; floridinine only showed the anti-fungal effect.
