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The extracts were dried and concentrated; the residue was extracted six times with 250-ml portions of hexane. The combined extracts were cooled to room temperature and decanted from a gum which separated. On seeding,
the decantate deposited 2.0 g of 7, mp 106-112'.

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curtlee

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xhxhuan(½ð±Ò+1,VIP+0): 7-31 09:40
xhxhuan(½ð±Ò+2,VIP+0): 12-2 15:46
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2Â¥2009-07-30 19:56:22
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xhxhuan

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3Â¥2009-07-30 21:03:07
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monitor2885

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[ Last edited by monitor2885 on 2009-7-31 at 21:23 ]
Retirement
4Â¥2009-07-31 21:21:57
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kongxiangshi

½ð³æ (СÓÐÃûÆø)

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xhxhuan(½ð±Ò+1,VIP+0): 8-18 00:04
xhxhuan(½ð±Ò+2,VIP+0): 12-2 15:46
On seedingÓ¦¸ÃÊǽᾧʱ
decanted from a gum which separated ´ÓÁíÍâ·ÖÀëµÄ¹ÞÇãµ¹
5Â¥2009-08-12 17:08:36
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