QSY 21 CARBOXYLIC ACID, SUCCINIMIDYL ESTER
- CAS No.
- 304014-13-9
- Chemical Name:
- QSY 21 CARBOXYLIC ACID, SUCCINIMIDYL ESTER
- Synonyms
- Qsy 21;QSY21 SE;Qsy 21nhs;QSY21 NHS ester;QSY 21 CARBOXYLIC ACID, SUCCINIMIDYL ESTER;Xanthylium, 3,6-bis(2,3-dihydro-1h-indol- 1-yl)-9-[2-[[4-[[(2,5-dioxo-1-pyrrolidinyl)oxy]carbonyl]- 1-piperidinyl]sulfonyl]phenyl]-, Chloride
- CBNumber:
- CB33353650
- Molecular Formula:
- C45H39ClN4O7S
- Molecular Weight:
- 815.34
- MDL Number:
- MOL File:
- 304014-13-9.mol
- MSDS File:
- SDS
| Melting point | >200℃ |
|---|---|
| solubility | Soluble in dimethyl sulfoxide, methanol |
| form | Solid |
| color | Purple solid |
| Appearance | dark purple powder |
| λmax | 661 nm |
| Biological Applications | Amplification assays; hybridization assays; litigation assays; ligand assays; detecting analytes,enzymes,optical microcavities,protein– DNA interactions; imaging apoptosis,b-lactamase activity; FRET probes |
QSY 21 CARBOXYLIC ACID, SUCCINIMIDYL ESTER price
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| ChemScene | CS-1170572 | QSY 21 NHS 95.0% | 304014-13-9 | 5mg | $444 | 2026-06-04 | Buy |
| ChemScene | CS-1170572 | QSY 21 NHS 95.0% | 304014-13-9 | 10mg | $666 | 2026-06-04 | Buy |
| aablocks | AA02AJWQ | DusQ21NHSester ≥96% | 304014-13-9 | 5mg | $400 | 2026-06-02 | Buy |
| aablocks | AA02AJWQ | DusQ21NHSester ≥96% | 304014-13-9 | 10mg | $660 | 2026-06-02 | Buy |
| ACHEMBLOCK | AD287316 | QSY21 NHS 96% | 304014-13-9 | 5MG | $135 | 2026-05-27 | Buy |
QSY 21 CARBOXYLIC ACID, SUCCINIMIDYL ESTER Chemical Properties, Uses, Production
Description
DusQ® 21 is a dark quencher used as an acceptor in FRET applications, it has absorption maximum 656 nm, and can be used in multiplex assays due to the lack of secondary fluorescence. It is a quencher of choice for pairing with fluorescent dyes that emit in the red and near-infrared part of the range. DusQ 21 NHS ester derivative is used for labeling with the primary amines of amine-containing molecules. It can be used for quenching of many fluorophores, including Cyanine5, Cyanine5.5, AF 647.
Uses
QSY 21 NHS, a dark quencher is an efficient energy transfer acceptor of the far red and NIR fluorescent probes. QSY 21 NHS works in the wavelength range of 540-750 nm, and is frequently used in FRET applications. QSY 21 NHS does not emit fluorescence in normal conditions. NHS esters can be used to label the primary amines (R-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules[1].
References
[1] Kabelác M, et al. A comparative study of the binding of QSY 21 and Rhodamine 6G fluorescence probes to DNA: structure and dynamics. Phys Chem Chem Phys. 2010 Sep 7;12(33):9677-84. DOI:10.1039/c004020g
Abs/Em Maxima
656 nm
Extinction Coefficient
72800
QSY 21 CARBOXYLIC ACID, SUCCINIMIDYL ESTER Preparation Products And Raw materials
Raw materials
Preparation Products
QSY 21 CARBOXYLIC ACID, SUCCINIMIDYL ESTER Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Shanghai Annengjian Biomedical Technology Co., LTD | 021-68781987 13818305065 | sales@energybiopharma.com | China | 788 | 58 |
| Shanghai YuanYe Biotechnology Co., Ltd. | 15026964105 | 2881489226@qq.com | China | 89667 | 60 |
| Zhengzhou Huiju Chemical Co., Ltd. | 0371-55900031 18137872243 | 3927209986@qq.com | China | 9999 | 55 |
| Xi'an Confluore Biological Technology Co., Ltd. | +86-156-80926068 +86-15680926068 | 1924344760@qq.com | China | 4229 | 58 |
| BOC Sciences | +1-631-485-4226 | inquiry@bocsci.com | United States | 19935 | 58 |
| Xi'an Kaixin Biotechnology Co., Ltd | 029-68881181 13619217766 | 3495811982@qq.com | China | 2817 | 58 |
| Changsha Hanchen Biotechnology Co., LTD | 18175992585 | wanglin@hanchibio.cn | China | 194 | 58 |
| Shanghai Easy CDMO Co.,Ltd | Info@easycdmo.com 13564957716 | Info@easycdmo.com | China | 9999 | 58 |
| Shanghai Aladdin Biochemical Technology Co.,Ltd. | 6206333 13167063860 | anhua.mao@aladdin-e.com | China | 43553 | 58 |
| Jilin Chinese Academy of Sciences-yanshen Technology | 18143011203 | ET-market@chemextension.com | China | 38906 | 58 |
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