55790-78-8

• 常用中文名：1-Pyrazoline, 3,3,5,5-tetramethyl-4-methylene-
• 常用英文名：1-Pyrazoline, 3,3,5,5-tetramethyl-4-methylene-
• CAS号：55790-78-8
• 分子式：C₈H₁₄N₂
• 分子量：138.21000
• 发布时间：2017-04-20 15:03:24
• 更新时间：2025-09-24 16:36:42

名称

• 英文名: 3,3,5,5-tetramethyl-4-methylidenepyrazole
• 英文别名: 3,5-Dihydro-4-methylen-4H-pyrazole; 3,3,5,5-tetramethyl-4-methylidene-1-pyrazoline; 1-Pyrazoline,3,3,5,5-tetramethyl-4-methylene; 4-methylene-3,3,5,5-tetramethylpyrazoline; 4,5-Dihydro-3,3,5,5-tetramethyl-4-methylene-3H-pyrazole; 3,3,5,5-tetramethyl-4-methylene-4,5-dihydro-3H-pyrazole; 3,5-dihydro-3,3,5,5-tetramethyl-4-methylene-4H-pyrazole; 3,3,3,5-Tetramethyl-4-methylen-1-pyrazolin

物化性质

• 密度: 0.93g/cm3
• 沸点: 139.5ºC at 760mmHg
• 分子式: C₈H₁₄N₂
• 分子量: 138.21000
• 闪点: 29.2ºC
• 精确质量: 138.11600
• PSA: 24.72000
• LogP: 1.43680
• 折射率: 1.492

安全

• 海关编码: 2933199090

合成路线

30467-62-0 19493-09-5 ~% 55790-78-8

文献：Adam,W.; Doerr,M. Journal of the American Chemical Society, 1987 , vol. 109, p. 1240

27200-84-6 30467-62-0 ~% 55790-78-8

文献：Quast, Helmut; Jakobi, Harald Chemische Berichte, 1991 , vol. 124, # 7 p. 1613 - 1618

上下游产品

上游产品  3
30467-62-0 19493-09-5 27200-84-6
下游产品  0

海关

海关编码	2933199090
中文概述	2933199090. 其他结构上有非稠合吡唑环化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0%
申报要素	品名, 成分含量, 用途, 乌洛托品请注明外观, 6－己内酰胺请注明外观, 签约日期
Summary	2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%