» Ergocalciferol Tablets contain not less than 100.0 percent and not more than 120.0 percent of the labeled amount of C28H44O.
Packaging and storage Preserve in tight, light-resistant containers.
Labeling Label the Tablets to indicate the content of ergocalciferol in mg. The activity may be expressed also in terms of USP Units, on the basis that 40 USP Vitamin D Units = 1 µg.
A: Evaporate under a stream of nitrogen to dryness 1 mL of the filtrate obtained in Identification test B, and dissolve the residue in 50 mL of alcohol: the UV absorption spectrum of the solution exhibits maxima and minima at the same wavelengths as that of a similar preparation of USP Ergocalciferol RS, concomitantly measured.
Disintegration 701: 30 minutes.
Uniformity of dosage units 905: meet the requirements.
Auxiliary Information Please check for your question in the FAQs before contacting USP.
USP32NF27 Page 2271