112809-52-6

• 常用中文名：4,4'-(4H-1,2,4-三唑-4-基亚甲基)双苄腈(与来曲唑相关的化合物A)
• 常用英文名：Letrozole related compound B
• CAS号：112809-52-6
• 分子式：C₁₇H₁₁N₅
• 分子量：285.30300
• 发布时间：2018-12-16 19:01:52
• 更新时间：2026-07-17 13:58:25
• Letrozole related compound B is an aromatase inhibitor impurity.

名称

• 中文名: 4,4’-(4H-1,2,4-三唑-4-基亚甲基)双苯腈
• 英文名: 4-[(4-cyanophenyl)-(1,2,4-triazol-4-yl)methyl]benzonitrile
• 中文别名: 异来曲唑; 来曲唑杂质09; 来曲唑杂质A; Letrozole相关化合物B; 来曲唑对照品; 异曲唑; LETROZOLE杂质A; 来曲唑相关化合物A; 来曲唑杂质A(来曲唑相关化合物A); 来曲唑相关物质A; LETROZOLE 相关物质A; 4,4-(4H-1,2,4-噻唑-4-亚甲基)双苯甲腈; 4,4'-(4H-1,2,4-三唑-4-基亚甲基)双苯腈
• 英文别名: 4,4'-(4H-1,2,4-Triazol-4-ylmethylene)dibenzonitrile; 4-[α-(4-cyano-phenyl)-1-(1,3,4-triazol-1-yl)-methyl]-benzonitrile; 4,4'-(1H-1,3,4-triazol-1-ylMethylene)dibenzonitrile; Letrozole Impurity A (Letrozole Related Compound A); Letrozole Related CoMpound A; letrozole regioisomer; Letrozole specified impurity A; Letrozole Impurity A/ Letrozole Related Compound A (Iso Letrozole); dibenzonitrile; AMiodone IMpurity-B; 4,4'-(4H-1,3,4-TRIAZOL-4-YLMETHYLENE)BIS; AMiodone IMpurity-A; 4,4'-(4H-1,2,4-TRIAZOL-4-YLMETHYLENE)BIS BENZONITRILE; Letrozole Impurity 1; UNII-7VSW8QP34K; Benzonitrile, 4,4'-(4H-1,2,4-triazol-4-ylmethylene)bis; 4,4'-((4H-1,2,4-Triazol-4-yl)methylene)dibenzonitrile; 4,4'-((4H-1,2,4-Triazol-4-yl); Letrozole Impurity A; 4,4'-(1H-1,3,4-triazol-1-ylmethylene)dibenzonitrile/4,4'-(4H-1,2,4-Triazol-4-ylmethylene)bisbenzonitrile; LETRAZOLE RELATED COMPOUND A; LETRAZOLE REALTED COMPOUND A; Iso Letrozole; Letrozole iMpurities; 4,4′-(4H-1,2,4-Triazol-4-ylmethylene)bis benzonitrile (Letrozole Related Compound A)

物化性质

• 密度: 1.21g/cm3
• 沸点: 563.5ºC at 760mmHg
• 分子式: C₁₇H₁₁N₅
• 分子量: 285.30300
• 闪点: 294.6ºC
• 精确质量: 285.10100
• PSA: 78.29000
• LogP: 2.65916
• 蒸汽压: 1.01E-12mmHg at 25°C
• 折射率: 1.665

安全

• 危险品运输编码: NONH for all modes of transport
• 海关编码: 2933990090

合成路线

288-88-0 69545-39-7 ~3% 112809-52-6 112809-51-5

文献：US2007/112202 A1, ; Page/Page column 7 ;

112809-27-5 1194-02-1 112809-25-3 ~% 112809-52-6 详细

文献：WO2007/54964 A2, ; Page/Page column 5; 11 ;

上下游产品

上游产品  5
288-88-0 69545-39-7 112809-27-5 1194-02-1
112809-25-3
下游产品  0

海关

海关编码	2933990090
中文概述	2933990090. 其他仅含氮杂原子的杂环化合物. 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	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%