42957-17-5

• 常用中文名：Methyl 5,5-dimethyl-2,4-dioxohexanoate
• 常用英文名：Methyl 5,5-dimethyl-2,4-dioxohexanoate
• CAS号：42957-17-5
• 分子式：C₉H₁₄O₄
• 分子量：186.20500
• 发布时间：2016-08-08 11:57:09
• 更新时间：2025-08-26 18:24:58

名称

• 英文名: Methyl 5,5-dimethyl-2,4-dioxohexanoate
• 英文别名: 5,5-dimethyl-2,4-dioxo-hexanoic acid methyl ester; methyl pivaloylpyruvate; 5,5-Dimethyl-2,4-dioxo-hexansaeure-methylester; tert.-Pentyryl-brenztraubensaeuremethylester; pivaloylpyruvic acid methyl ester

物化性质

• 分子式: C₉H₁₄O₄
• 分子量: 186.20500
• 精确质量: 186.08900
• PSA: 60.44000
• LogP: 0.73380

安全

• 海关编码: 2918300090

合成路线

75-97-8 7664-93-9 95-92-1 ~0% 42957-17-5 详细

文献：Bayer Aktiengesellschaft Patent: US4739104 A1, 1988 ;

75-97-8 95-92-1 ~% 42957-17-5

文献：Dessert; Halverstadt Journal of the American Chemical Society, 1948 , vol. 70, p. 2595 Full Text View citing articles Show Details Royals Journal of the American Chemical Society, 1945 , vol. 67, p. 1508

553-90-2 75-97-8 ~34% 42957-17-5

文献：Emerson, David W.; Titus, Richard L.; Gonzalez, Rowena M. Journal of Organic Chemistry, 1991 , vol. 56, # 18 p. 5301 - 5307

上下游产品

上游产品  4
75-97-8 7664-93-9 95-92-1 553-90-2
下游产品  1
55107-14-7

海关

海关编码	2918300090
中文概述	2918300090 其他含醛基或酮基不含其他含氧基羧酸（包括酸酐、酰卤化物、过氧化物和过氧酸及该税号的衍生物）. 增值税率:17.0% 退税率:9.0% 监管条件:无 最惠国关税:6.5% 普通关税:30.0%
申报要素	品名, 成分含量, 用途
Summary	2918300090 other carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%