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3,5-二甲基吡唑

3,5-二甲基吡唑

CAS号 67-51-6
规格 1kg桶装/25kg桶装/200kg桶装
纯度 99%
货号 WK2025030422
货期 1个月
品牌 为科新材料
库存 13ton
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参考价: ¥13.00 元/吨
货号 品牌 纯度 规格 参考价 货期
WK2025030422 为科新材料 99% 1kg桶装/25kg桶装/200kg桶装 ¥13.00元/吨 1个月

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详细信息(中文):
3,5 - 二甲基吡唑是一种含氮杂环有机化合物,其核心结构为吡唑环(由两个相邻氮原子和三个碳原子组成的五元芳香环),并在吡唑环的 3 位和 5 位碳原子上各连接一个甲基(-CH₃)取代基,因此得名 “3,5 - 二甲基吡唑”。
一、基本结构与性质
分子结构
化学式为 C₅H₈N₂,分子量约为 96.13 g/mol。其结构中,吡唑环的 1 位和 2 位为氮原子,3、4、5 位为碳原子,其中 3 位和 5 位的氢原子被甲基取代,形成对称结构(3 位和 5 位甲基无位置差异)。
物理性质
通常为白色至类白色结晶性粉末或固体,具有一定的挥发性;易溶于有机溶剂(如乙醇、乙醚、丙酮等),在水中溶解度较低;熔点约为 106-108℃(不同纯度可能略有差异),化学稳定性较好。
化学性质
作为吡唑类衍生物,其氮原子具有一定的碱性(可与酸成盐),同时芳香环结构使其可发生取代、氧化等反应;因分子中含甲基和吡唑环的极性结构,兼具疏水性和亲水性片段,可与金属离子(如铜、锌等)形成配位化合物。
二、主要用途
化学合成中间体
用于合成医药、农药、染料等精细化学品,例如通过取代反应制备吡唑类杀菌剂、抗炎药物前体。
金属离子螯合剂
因吡唑环的氮原子可与金属离子配位,常用于金属离子的萃取、分离,或作为催化剂配体提升反应选择性。
材料领域
可用于制备含吡唑结构的高分子材料(如树脂、凝胶),改善材料的热稳定性或配位性能。
三、安全与储存
属于一般有机化学品,避免直接接触皮肤和吸入粉尘,操作时需佩戴防护手套和口罩。
储存时需密封置于阴凉干燥处,远离火源和氧化剂,防止受潮或变质。
综上,3,5 - 二甲基吡唑凭借其对称的结构和独特的化学性质,在有机合成、配位化学等领域具有重要应用价值。

详细信息(英文):
3,5-Dimethylpyrazole is a nitrogen-containing heterocyclic organic compound. Its core structure is a pyrazole ring (a five-membered aromatic ring consisting of two adjacent nitrogen atoms and three carbon atoms), with a methyl group (-CH₃) substituent attached to each of the 3rd and 5th carbon atoms of the pyrazole ring, hence the name "3,5-dimethylpyrazole".
I. Basic Structure and Properties
Molecular Structure
The chemical formula is C₅H₈N₂, with a molecular weight of approximately 96.13 g/mol. In its structure, the 1st and 2nd positions of the pyrazole ring are nitrogen atoms, and the 3rd, 4th, and 5th positions are carbon atoms. The hydrogen atoms at the 3rd and 5th positions are replaced by methyl groups, forming a symmetric structure (there is no positional difference between the methyl groups at the 3rd and 5th positions).
Physical Properties
It is usually a white to off-white crystalline powder or solid, with certain volatility. It is easily soluble in organic solvents (such as ethanol, ether, acetone, etc.) and has low solubility in water. The melting point is approximately 106-108°C (slight differences may occur depending on purity), and it has good chemical stability.
Chemical Properties
As a pyrazole derivative, its nitrogen atoms have certain basicity (can form salts with acids). Meanwhile, the aromatic ring structure enables it to undergo substitution, oxidation, and other reactions. Due to the molecular structure containing both methyl groups and polar pyrazole rings, it has both hydrophobic and hydrophilic segments and can form coordination compounds with metal ions (such as copper, zinc, etc.).
II. Main Uses
Chemical Synthesis Intermediate
It is used in the synthesis of fine chemicals such as pharmaceuticals, pesticides, and dyes. For example, it is used to prepare pyrazole fungicides and anti-inflammatory drug precursors through substitution reactions.
Metal Ion Chelating Agent
Because the nitrogen atoms of the pyrazole ring can coordinate with met

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英文名 3,5-Dimethylpyrazole
中文名 3,5-二甲基吡唑
CAS号 67-51-6 溶解性 ---
分子量 96.13040 熔点 105-108 °C(lit.)
密度 0,884 g/cm3 沸点 218 °C(lit.)

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