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-> VINPOCETINE
VINPOCETINE
SPECIFICATIONS
ITEMS
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SPECIFICATIONS
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Appearance
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White to slightly yellow
crystals or crystalline powder, odorless
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Solubility
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In Chloroform it is
freely soluble.
In Dimethylformamide,
it is sparingly soluble.
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T% of 10% Chloroform Solution
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NLT 90%
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Melting Point
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150ºC~153ºC
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UV Assay
(E 1%-1 cm)
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330~343
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IR Identification
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Complies with reference
standard
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Specific Optical Rotation
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+127º~ +134º
(dried substance)
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Loss on Drying
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NMT 0.20%
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Impurities
(HPLC):
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Apovincamine
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NMT 0.4%
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Related Compounds: totals
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NMT 0.4%
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Methoxy-vinpocetine
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NMT 0.1%
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Ethyl-vincaminate
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NMT 0.2%
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Others
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NMT 0.1%
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Assay
(HC1O4 titration)
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99.0%~101.0%
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Sulphated Ash
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NMT 0.10%
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Heavy Metals
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NMT 10 ppm
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Sulfates
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NMT 0.03%
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Residual
Solvents:
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Ethyl-acetate
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NMT 1,000 ppm
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Tapped Bulk Density
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0.2 g/ml~0.9 g/ml
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Microbiology:
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Total Bacterial Count
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NMT 1,000 CFU/g
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Fungi
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NMT 100 CFU/g
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Staph. Aureus
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Absent
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P. Aeruginosa
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Absent
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E. Coli
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Absent
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Enterobacteriaceae
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NMT 100 CFU/g
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Salmonella
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Absent
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