4-CPPU is a cytokinin class plant growth regulator that is used to promote plant cell division. This compound has been used to increase embryogenic potential by inducing somatic embryogenesis, assist in plant callus production and investigate effects on plant biomass growth. 4-CPPU has also been shown to stimulate organogenesis in some plant species, such as Rubus.

4-CPPU increases plant growth by inhibiting cytokine oxidase, a regulator of cytokinin activity. The exact type of inhibition has not yet been elucidated. Researchers have found 4-CPPU to function as a competitive inhibitor, while others have found it to behave as a noncompetitive inhibitor.

Product Specifications4-CPPUForchlorfenuronN-(2-chloro-4-pyridyl)-N’-phenylurea

Formula: C₁₂H₁₀ClN₃O

MW: 247.68 g/mol

Storage/Handling: Store desiccated at 4°C.

PubChem Chemical ID: 93379

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★活体技术荧光检测荧光蛋白标记适用于标记细胞、病毒、基因等，通常使用的是 GFP、EGFP、RFP（DsRed）等；荧光染料标记适用于标记抗体、多肽、小分子药物等；常用的有 Cy3、Cy5、Cy5.5 及 Cy7量子点标记（新的标记方法）适用于标记肿瘤，主要应用在活细胞实时动态荧光观察与成像；量子点（quantum dot) 是一种能发射荧光的半导体纳米微晶体，外观恰似一极小的点状物。量子点荧光比有机荧光染料的发射光强的 20 倍，稳定性强 100 倍以上，具有荧光发光光谱较窄、量子产率高、不易漂白、激发光谱宽、颜色可调，并且光化学稳定性高，不易分解等诸多优点。