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Common NameErgocalciferol
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IUPAC(5Z,7E,22E)-(3S)-9,10-secoergosta-5,7,10(19),22-tetraen-3-ol
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CAS(3β,5Z,7E,22E)-9,10-secoergosta-5,7,10(19),22-tetraen-3-ol
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CAS No.50-14-6
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Molecular FormulaC28H44O
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Molecular Structure
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Physical PropertiesMolecular weight:396.7; Physical form:Colourless crystals. Melting point:115-118 °C; Solubility:In water 50 mg/l (room temperature). In acetone 69.5, benzene 10, hexane 1 (all in g/l, room temperature).; Stability:Stable in alkaline media. Unstable to light and air, and in acidic media. Above 120 °C, an irreversible reaction takes place, with conversion to the 10a- and 9b- isomers of the provitamin.;
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ToxicologyOral:Acute oral LD50 for rats 56, mice 23.7 mg/kg. Sub-acute oral LD50 (5 d) for rats 7 mg/ kg daily.
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Environmental ProfileEnvironmental fate: Animals:The D vitamins, owing to their metabolic conversion products, play a central role in the regulation of calcium and phosphate metabolism in mammals, which is also affected by the peptide hormones calcitonin and parathormone. These promote uptake of calcium
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Transport InformationHazard Class:O (Obsolete as pesticide, not classified)
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