タイトルまたは説明

Product Name: Camptothecin Specification: *0%, *5%, *8%, *9% Appearance: Brown crystalline powder; easy to loss activity under light. Botanical Source: camptotheca acuminata decne’s fruit and leaf CAS#: ********4 Molecular formula: C*0H*6N2O4 Molecular weight: **8.*6 Test Method: HPLC Functions and Uses: Camptothecin affects the activity of the enzyme topoisomerase I, whose normal action is to cleave, unwind, and religate DNA. When camptothecin binds to topoisomerase I, it will be able to cleave but not to religate DNA. Thereby, camptothecin causes single strand breaks in DNA Camptothecin is a plant secondary metabolite used as an anti-cancer drug that damages DNA, leading to the destruction of the ***** comes from Camptotheca acuminata, a deciduous tree found in southern China. A close analogue, *-methoxycamptothecin, is also present in the same source. Quality standard: (1) Specific optical rotation : ****2° (2)Melting point: *****7 (3)Purity: *8%, *9%(HPLC) (4)Loss on dry:<0.5% (5)Ash: <1% (6) Heavy metals : <*0ppm (7)Arsenic salt:<1ppm