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My CartAppearance：Yellow or Green Powder
Molecular Weight：533.88
Storage：Store at -20℃，3 years
Molecular Formula：C25H24N6O·3HCl
CAS：23491-45-4
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| Name | Hoechst 33258 |
| CAS | 23491-45-4 |
| Molecular Formula | C25H24N6O·3HCl |
| Molecular Weight | 533.88 |
| Purity/Grade | ≥98%(TLC) |
| Appearance | Yellow or Green Powder |
| Storage | Store at -20℃，3 years |
| Unit | Piece |
| Specification | 25mg |
别名：2'-(4-Hydroxyphenyl)-5-(4-methyl-1-piperazinyl)- 2,5'-bi(1H-benzimidazole) trihydrochloride;2-[2- (4-Hydroxyphenyl)-6-benzimidazoyl]-6-(1-methyl-4- piperazyl)benzimidazole trihydrochloride;HOE 33258； Hoechst 33258
说明：荧光色素；用于DNA、染色体和核酸的染色；荧光染色法和免疫荧光技术。Hoechst 33258 是一种可以穿透细胞膜的蓝色荧光染料，它在嵌入双链 DNA 后释放强烈的蓝色荧光，对细胞的毒性较低。Hoechst 33258 常用于细胞凋亡检测，染色后用荧光显微镜观察或流式细胞仪检测，也可以用于普通的细胞核染色，或常规的DNA染色。
物理性状：黄色至深黄色粉末；溶于水，黄或棕色溶液，参考浓度为9.80 - 10.20 mg/ml；熔点＞300℃。
用途：细胞遗传学研究的常用试剂，荧光染色细胞的DNA ，插入DNA的A-T区，具有低的细胞毒性，形成膜渗透性荧光DNA链。
用于细胞核染色时，推荐的Hoechst 33258工作浓度为0.5-10μg/ml。
配制母液
Hoechst 33258溶于水，溶解度可达10mg/ml。因此可配制成10mg/ml的母液于-20℃避光保存
注意事项
1) Hoechst 33258 对人体有一定刺激性，请注意适当防护。
2) 荧光染料都存在淬灭的问题，建议染色后尽量当天完成检测。
3) 为减缓荧光淬灭可以使用抗荧光淬灭封片液。
4) 为了您的安全和健康，请穿实验服并戴一次性手套操作。
使用方法
1. 用PBS或合适的缓冲液制备10～50µM Hoechst 33258染色液。
2. 固定的细胞或组织染色：
对于固定的细胞或组织样品，固定后，适当洗涤去除固定剂。随后如果需要进行免疫荧光染色，则先进行免疫荧光染色，染色完毕后再按后续步骤进行Hoechst33258染色。如果不需要进行其它染色，则直接进行后续的Hoechst 33258染色。
a) 对于贴壁细胞或组织切片：加入适量Hoechst 33258染色液，覆盖住样品即可。对于悬浮细胞：至少加入待测染色样品体积3倍的染色液，混匀。室温放置3-5分钟。
b) 吸除Hoechst 33258染色液，用TBST、PBS或生理盐水洗涤2-3次，每次3-5分钟。
c) 直接在荧光显微镜下观察或封片后荧光显微镜下观察。激发波长350nm，发射波长460nm。
3. 活细胞或组织染色：
a) 细胞培养物中加入适量Hoechst 33258染色液，约1/10细胞培养基体积，必须充分覆盖住待染色的样品。通常对于六孔板一个孔需加入1ml染色液，对于96孔板一个孔需加入100μl染色液。
b) 在 37℃培养细胞 10～20 分钟。
c) 用 PBS或合适的缓冲液洗细胞两次。
d) 直接在荧光显微镜下观察或封片后荧光显微镜下观察。激发波长350nm，发射波长460nm。
备注：产品信息可能会有优化升级。请以实际标签信息为准。
Remark：These protocols are for reference only. Solarbio does not independently validate these methods.
Note：
1. The products are all for scientific research use only. Do not use it for medical, clinical diagnosis or treatment, food and cosmetics, etc. Do not store them in ordinary residential areas.
2. For your safety and health, please wear laboratory clothes, disposable gloves and masks.
3. The experimental results may be affected by many factors, after-sale service is limited to the product itself and does not involve other compensation.
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