Camptothecin	10-Hydroxycamptothecin
7-elthyl-10-hydroxycamptothecin	Irinotecan HCL trihydrate

10-Hydroxy camptothecin

Chemical Name: (4S)-4-Ethyl-4,9-dihydroxy-4,12-dihydro-1H-pyrano[3,4-f]quinolino-[2,3-a]indolizine-3,14-dione(4S)-4-Ethyl-4,9-dihydroxy-4,12-dihydro-1H-pyrano[3,4-f]quinolino-[2,3-a]indolizine-3,14-dione

CAS: 19685-09-7

Camptotheca acuminata

Quality Standard
(1) Molecular Formula:C₂₀H₁₆N₂O₅
(2) Molecular Weight: 364.36
(3) Melting Point: 264~267
(4) Contents(HPLC): >98%
(5) Loss of drying: <5%
(6) Ash: <0.1%
(7) Heavy Metal: <10ppm

Source
The source of 10-Hydroxy camptothecin is the seeds and leaf of camptotheca acuminata Decne, and also can be made from camptothecin.