USP 통칙원본
- 최초 등록일
- 2019.04.01
- 최종 저작일
- 2017.05
- 7페이지/ 한컴오피스
- 가격 1,000원
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본문내용
5.50.10. units of Potency (Biological)
For substances that cannot be completetely characterized by chemical or physical means or that need confirmation of functionality or tertiary structure, it may be necessary to express quantities of biological activity in units of biological potency, each defined by an authoritative, designated refer \ence standard. In cases where international reference materials have been discontinued, international units of potency may be defined in terms of molecular mass, such as in the cases of vitamins A, D, and E.
Where available, WHO international biological standards define the international Units (IU). USP monographs refer to the units assigned by USP Reference Standards either directly as IU or "USP Units."
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