ROTUNDIN - ROTUNDIN Rotundinum L-Tetrahydropalmatin OCH N 3...

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H 3 O C H 3 C H 3 O C H 3 C O O N ROTUNDIN Rotundinum L-Tetrahydropalmatin C 21 H 25 NO 4 P.t.l : 355,4 Rotundin là 5,8,13,13 α -tetrahydro-2,3,9,10-tetramethoxy-6H-dibenzo[a,g] quinolizin, ph i ch a t 98,0 đ n 101,0% C ế 21 H 25 NO 4 , tính theo ch ph m đã làm khô. ế Tính ch t Tinh th màu tr ng hay h i vàng, không mùi, không ơ v . B chuy n thành màu vàng khi ti p ế xúc v i ánh sáng ho c nhi t. Tan trong cloroform, h i tan trong ethanol và ether, không tan ơ trong n c, d tan trong acid sulfuric loãng. ướ Đi m ch y 141 – 144 ° C (Ph l c 6.7). ụ ụ Đ nh tính A. Ph h ng ngo i (Ph l c 4.2) c a ch ph m ph i phù h p v i ph h ng ngo i c a ế rotundin chu n (ĐC). B. Dung d ch S: Hoà tan 0,1 g ch ph m trong h n h p g m 10 ml ế n c ướ và 1 ml dung d ch acid sulfuric loãng (TT). Thêm 1 gi t dung d ch kali dicromat 5 % (TT) vào 2 ml dung d ch S, t a vàng xu t hi n.
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