Compound ID Compound Name(英文)Compound Name(中文)CAS 号结构式M.W.（分子量）Formula（分子式）PN4224-IMP-A Acetylcysteine Impurity A乙酰半胱氨酸杂质 A56-89-3240.29C6H12N2O4S2 PN4224-IMP-B Acetylcysteine Impurity B乙酰半胱氨酸杂质 B52-90-4121.15C3H7NO2S PN4224-IMP-C Acetylcysteine ...
Compound 2a chemical formula C14H22B10NO2S3Co1 formula weight 499.542 crystal size (mm) 0.18×0.15×0.123 temperature (K) 296(2)4 radiation 0.710735 crystal system Monoclinic6 space group P2(1)/c7 a(Å) 16.778(4)8 b(Å) 14.901(3)9 ...
B. -NO2 C. -C(CH3)3 D. -COOH 查看完整题目与答案 化合物①CH3C00CH3②CH3C0Br③CH3C0NH2④(CH3 CO)20进行水解反应的难易程度为() A. ①>②>③>④ B. ①>③>②>④ C. ③>①>④>② D. ②>④>①>③ 查看完整题目与答案 下列基团次序顺序最大的是 A. 乙基 ...
The title compound {systematic name: [1-(carboxymethyl)cyclohexyl]methanaminium 2,4,6-trinitrophenolate}, C9H18NO2+·C6H2N3O7−, was synt... H Li,HS Yathirajan,L Mallesha,... - 《Acta Crystallographica》 被引量: 1发表: 2009年 Experimental, quantum chemical studies...
g Cu、Mg合金与一定量的硝酸恰好完全反应,收集到NO和NO2的混合气体V L(标准状况);向反应后的溶液中加入足量NaOH溶液,沉淀完全后将其过滤、洗净、干燥,称得质量为10.7 g.则V的值可能是( ) A. 2.24 B. 4.48 C. 6.72 D. 7.84 查看完整题目与答案 支付工具发展史上的第二次飞跃是出现了 A. 法...
SO2 H2S S2N2 NO3NO2NO2 N2O F2 Cl2 Br2 I2 HCl ClC CCl4 CO32HCO3CO2 P PO43H3PO4 Na NaOH K KOH Ca Ca(OH)2 Ca CO3 Ca(HCO3)2 Mg Mg(OH)2 Al Al(OH)3 Zn word 格式-可编辑-感谢下载支持 表一 常见无机物英文名 Chemical name sulfur sulfite sulfate sulfur dioxide hydrogen sulfide...
NO2 Nitro-benzene 23.1.1StructureofNitrobenzene sp2 ONO147pm121pm127 Ar ONO极限式ONO共振式 NO2 ONO离域式ONO 23.1.2Preparationof Nitrobenzene Wehavealreadyseenmanyexamplesofthepreparationofaromaticnitrocompounds.Byfarthemostimportantroutetosuchcompoundsiselectrophilicaromaticnitrationwithnitricacid.NO2CH3CH3...
The oxidation number of S in the (NH 4 ) 2 S 2 O 8 is ( ) A. +3 B. +5 C. +7 D. +8 查看完整题目与答案 Point out the coordination number and the oxidation number of the central atom in coordination compound [Co(H2NCH2CH2NH2)2(NO2)Cl]Cl A. 4,Ⅱ B....
[1] aromatic compounds are collectively known as carbon ring compounds and derivatives whose rules are consistent with the rules of shock. They have a conjugated system closed circular molecules; II electronic meet 4n+2, and highly delocalized bond; Changping homogenization. Therefore, the compound ...