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问题:求:乙酰丙氨酸的文献或专利
类型:求助 (悬赏分:3分)
提问:feiyan
等级:
版块:文献检索技术、各类代理(wguoyong,wangjinyon,)
信誉:67%
回复:5
阅读:1037
时间:2005-10-28 07:37:29  编辑    加入/取消收藏    订制/取消短消息    举报该贴    

我有急用谢谢!fuslai@qq.com
回复人:prisca, (这辈子与化学结缘了!呵呵) 时间:2006-06-27 12:44:18   编辑 1楼
大家好 需要大家帮帮忙啊 !想询问N-乙酰基丙氨酸的pka值?或是有什么文献可以参考?请大家献宝啊 急~~~~~~~~~~


回复人:prisca, (这辈子与化学结缘了!呵呵) 时间:2006-06-27 12:49:51   编辑 2楼
我也是搞实验 现在分析数据 比较急 找不到对N-乙酰基丙氨酸的pka精确值 大家帮帮吧


回复人:thinpig7, (A chemical freak 作为一名斑竹,坚决反毒!反垃圾广告!) 时间:2005-10-28 08:52:30   编辑 3楼
是N-乙酰基丙氨酸还是3-乙酰基丙氨酸?
后者:
4-Oxonorvaline, 9CI . 2-Aminolevulinic acid, 8CI . 3-Acetylalanine
Chapman and Hall Number: HZW98-E CAS Registry Number: 4439-83-2
Molecular Formula: C 5 H 9 NO 3 Molecular Weight: 131.131 Accurate Mass: 131.058244 Percentage Composition: C 45.80%; H 6.92%; N 10.68%; O 36.60%
Variant: ( S )-form Synonym(s): L -form Chapman and Hall Number: JBO92-U CAS Registry Number: 51268-84-9 Molecular Formula: C 5 H 9 NO 3 Molecular Weight: 131.131 Accurate Mass: 131.058244 Percentage Composition: C 45.80%; H 6.92%; N 10.68%; O 36.60%
Physical Description: Cryst. (2-propanol) Melting Point: Mp 127-129degrees Optical Rotation: [alpha] 21 D minus8 (c, 1.0 in H 2 O)
Derivative: Hydrochloride Chapman and Hall Number: JBO93-V CAS Registry Number: 50817-16-8 Physical Description: Solid (MeOH or EtOAc) Melting Point: Mp 148-149degrees Optical Rotation: [alpha] 23 D +8.05 (c, 0.9 in H 2 O)
Variant: (plus or minus)-form Chapman and Hall Number: JBO94-W CAS Registry Number: 68982-80-9 Molecular Formula: C 5 H 9 NO 3 Molecular Weight: 131.131 Accurate Mass: 131.058244 Percentage Composition: C 45.80%; H 6.92%; N 10.68%; O 36.60% Physical Description: Cryst. (EtOH aq.) Melting Point: Mp 138degrees (124-125degrees)


回复人:thinpig7, (A chemical freak 作为一名斑竹,坚决反毒!反垃圾广告!) 时间:2005-10-28 08:53:51   编辑 4楼
Wiss, O. et al. , Helv. Chim. Acta , 1952, 35 , 407-411, (synth) Burger, K. et al. , Synthesis , 1992, 1150-1156, (S-form, synth, ir, pmr, cmr)
Werner, R.M. et al. , J.O.C. , 1997, 62 , 8243-8246, (S-form, synth, ir, pmr, cmr)
Laue, K.W. et al. , Synthesis , 1998, 1453-1456, (synth)


回复人:feiyan, (我是搞实验的,谢谢各位的帮忙了。) 时间:2005-10-29 08:00:07   编辑 5楼
是N-乙酰基丙氨酸




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