Determine the necessary mass, volume, or concentration for preparing a solution.
≥90% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Store at -20°C,Argon charged Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
ATTO 425 NHS ester is a new fluorescent marker based on the Rhodamine structure. It has strong absorption, high fluorescence quantum yield, high thermal stability and photochemical stability, and is suitable for single molecule detection and high-resolution microscopy. ATTO 425 NHS ester is an NHS ester derivative of ATTO 425 that can be used to label proteins or antibodies.
Application:
Atto 425 NHS ester is used in the development of bifunctional fluorescent, inorganic micro-partices (Zeolite L crystals) designed for targeting or imaging mutliple components . Reacts with amino groups or amine modified oliognucleotides to form a stable amine bond. Utilized as an essential component of molecular beacons, which were designed for use in real-time PCR assays to allow for rapid and accurate identification of gram-negative bacteria . When conjugated with benzylguanine, the fluorescence of Atto 425-NHS is quenched but becomes fluorescent upon labeling of the SNAP-tag fusion protein, making this conjugate an ideal candidate for experiments in living cells . Used as one of the donor probes in three-color FRET experiments designed to investigate the kinetics of RNA-protein complex formation .
Atto fluorescent labels are designed for high sensitivity applications, including single molecule detection. Atto labels have rigid structures that do not show any cis-trans-isomerization. Thus these labels display exceptional intensity with minimal spectral shift on conjugation.
| Rangos de excitación y emisión | λex 437 nm,λem 483 nm in 0.1 M phosphate pH 7.0 |
|---|
| Pubchem Sid | 488199097 |
|---|---|
| Pubchem Sid Url | https://pubchem.ncbi.nlm.nih.gov/substance/488199097 |
| Sonrisas canónicas | CCOC(=O)C1=CC2=CC3=C(C=C2OC1=O)N(C(CC3C)(C)C)CCCC(=O)ON4C(=O)CCC4=O |
| IUPAC Name | ethyl 9-[4-(2,5-dioxopyrrolidin-1-yl)oxy-4-oxobutyl]-6,8,8-trimethyl-2-oxo-6,7-dihydropyrano[3,2-g]quinoline-3-carboxylate |
| InChIKey | PUEQEMDTFPYCDY-UHFFFAOYSA-N |
| INCHI | 1S/C26H30N2O8/c1-5-34-24(32)18-12-16-11-17-15(2)14-26(3,4)27(19(17)13-20(16)35-25(18)33)10-6-7-23(31)36-28-21(29)8-9-22(28)30/h11-13,15H,5-10,14H2,1-4H3 |
| Isómeros SMILES | CCOC(=O)C1=CC2=CC3=C(C=C2OC1=O)N(C(CC3C)(C)C)CCCC(=O)ON4C(=O)CCC4=O |
| WGK Alemania | 3 |
| Peso molecular | 498.52 |
| Reaxy-Rn | 54561732 |
| Reaxys-RN_link_address | https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=54561732&ln= |
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →Full quality attributes and acceptance criteria for this grade.
View spec sheet →Taxonomy Tree
| Kingdom | Organic compounds |
|---|---|
| Superclass | Organoheterocyclic compounds |
| Clase | Benzopyrans |
| Subclass | 1-benzopyrans |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Chromenopyridines |
| Alternative Parents | Coumarins and derivatives Hydroquinolines Dialkylarylamines Pyranones and derivatives Aralkylamines Pyrrolidine-2-ones Benzenoids Dicarboxylic acids and derivatives Dicarboximides Heteroaromatic compounds Amino acids and derivatives Carboxylic acid esters Carboxylic acid salts Lactones Lactams Azacyclic compounds Oxacyclic compounds Organic salts Organic oxides Organopnictogen compounds Carbonyl compounds Hydrocarbon derivatives |
| Molecular Framework | Aromatic heteropolycyclic compounds |
| Substituents | Chromenopyridine - Coumarin - Tetrahydroquinoline - Tertiary aliphatic/aromatic amine - Dialkylarylamine - Pyranone - Aralkylamine - Dicarboxylic acid or derivatives - Pyran - Pyrrolidone - 2-pyrrolidone - Benzenoid - Dicarboximide - Pyrrolidine - Heteroaromatic compound - Tertiary amine - Lactone - Lactam - Carboxylic acid ester - Carboxylic acid salt - Amino acid or derivatives - Carboxylic acid derivative - Oxacycle - Azacycle - Hydrocarbon derivative - Organopnictogen compound - Organonitrogen compound - Organic oxygen compound - Organic nitrogen compound - Organooxygen compound - Amine - Organic oxide - Carbonyl group - Organic salt - Aromatic heteropolycyclic compound |
| Descripción | This compound belongs to the class of organic compounds known as chromenopyridines. These are aromatic heterocyclic compounds structurally characterized by a pyridine ring fused to a chromene moiety. |
| External Descriptors | ethyl ester - pyrrolidinone |
Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Fecha | Articulo |
|---|---|---|---|
| Certificate of Analysis | Mar 11, 2026 | A334800 | |
| Certificate of Analysis | Mar 11, 2026 | A334800 | |
| Certificate of Analysis | Jun 12, 2025 | A334800 | |
| Certificate of Analysis | Jun 12, 2025 | A334800 | |
| Certificate of Analysis | Apr 13, 2024 | A334800 | |
| Certificate of Analysis | Apr 13, 2024 | A334800 | |
| Certificate of Analysis | May 20, 2023 | A334800 | |
| Certificate of Analysis | May 20, 2023 | A334800 |
| Solubilidad | Soluble in DMF, DMSO, and water. |
|---|---|
| Sensibilidad | Moisture sensitive. |
| Peso molecular | 498.500 g/mol |
| XLogP3 | 3.100 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 9 |
| Rotatable Bond Count | 9 |
| Exact Mass | 498.2 Da |
| Monoisotopic Mass | 498.2 Da |
| Topological Polar Surface Area | 120.000 Ų |
| Heavy Atom Count | 36 |
| Formal Charge | 0 |
| Complexity | 957.000 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 1 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| The total count of all stereochemical bonds | 0 |
| Covalently-Bonded Unit Count | 1 |
| 1. Jian Liu, Junbo Li, Yan Huang, Tong Li, Cheng Xu, Zhengyu Tao, Wei Ji, Xin Huang. (2025) Liquid-to-gel transitions of phase-separated coacervate microdroplets enabled by endogenous enzymatic catalysis. JOURNAL OF COLLOID AND INTERFACE SCIENCE, [PMID:40184654] [10.1016/j.jcis.2025.137486] |