DTSSP 是一种使氨基相互反应的交联剂。 由于DTSSP分子两端有N-羟基琥珀酰亚胺活性酯，可选择性地与氨基反应，可将载体蛋白与简单的半抗原或制备标记酶结合。 BS3 的化学结构具有连接部分的烷基链。 同时，DTSSP 和 DSP 能够切割容易被还原剂还原的引入二硫键的接头位点。 此外，由于具有磺酸基的活性酯基被引入到DTSSP和BS3中，因此可以在不使用有机溶剂如DMSO或DMF的情况下进行标记反应。
Homo-bifunctional Reagents
| Product Name | Code | Length (Å) |
| BS3 | B574 | 8.9 |
| DTSSP | D630 | 8.5 |
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