Dye content ≥50% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Room temperature Ships Normal 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 14 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Reactive red 120 is a polyaromatic azo organosulfur dye.
| Canonical Smiles | Oc1c(\N=N\c2ccccc2S(O)(=O)=O)c(cc3cc(cc(Nc4nc(Cl)nc(Nc5ccc(Nc6nc(Cl)nc(Nc7cc(cc8cc(c(\N=N\c9ccccc9S(O)(=O)=O)c(O)c78)S(O)(=O)=O)S(O)(=O)=O)n6)cc5)n4)c13)S(O)(=O)=O)S(O)(=O)=O |
|---|---|
| IUPAC Name | 5-[[4-chloro-6-[4-[[4-chloro-6-[[8-hydroxy-3,6-disulfo-7-[(2-sulfophenyl)diazenyl]naphthalen-1-yl]amino]-1,3,5-triazin-2-yl]amino]anilino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[(2-sulfophenyl)diazenyl]naphthalene-2,7-disulfonic acid |
| InChIKey | OVSNDJXCFPSPDZ-UHFFFAOYSA-N |
| INCHI | 1S/C44H30Cl2N14O20S6/c45-39-51-41(55-43(53-39)49-27-17-23(81(63,64)65)13-19-15-31(85(75,76)77)35(37(61)33(19)27)59-57-25-5-1-3-7-29(25)83(69,70)71)47-21-9-11-22(12-10-21)48-42-52-40(46)54-44(56-42)50-28-18-24(82(66,67)68)14-20-16-32(86(78,79)80)36(38(62)34(20)28)60-58-26-6-2-4-8-30(26)84(72,73)74/h1-18,61-62H,(H,63,64,65)(H,66,67,68)(H,69,70,71)(H,72,73,74)(H,75,76,77)(H,78,79,80)(H2,47,49,51,53,55)(H2,48,50,52,54,56) |
| Isomeric SMILES | C1=CC=C(C(=C1)N=NC2=C(C3=C(C=C(C=C3C=C2S(=O)(=O)O)S(=O)(=O)O)NC4=NC(=NC(=N4)NC5=CC=C(C=C5)NC6=NC(=NC(=N6)Cl)NC7=C8C(=CC(=C7)S(=O)(=O)O)C=C(C(=C8O)N=NC9=CC=CC=C9S(=O)(=O)O)S(=O)(=O)O)Cl)O)S(=O)(=O)O |
| WGK Germany | 3 |
| MeSH Entry Terms | C44H24Cl2N14Na6O20S6 |
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 | Benzenoids |
| Class | Naphthalenes |
| Subclass | Naphthalene sulfonic acids and derivatives |
| Intermediate Tree Nodes | Naphthalene sulfonates |
| Direct Parent | 2-naphthalene sulfonates |
| Alternative Parents | 2-naphthalene sulfonic acids and derivatives Naphthols and derivatives Benzenesulfonic acids and derivatives 1-sulfo,2-unsubstituted aromatic compounds Benzenesulfonyl compounds Aniline and substituted anilines 1-hydroxy-4-unsubstituted benzenoids Aminotriazines Chloro-s-triazines Aryl chlorides Sulfonyls Organosulfonic acids Heteroaromatic compounds Azo compounds Azacyclic compounds Secondary amines Propargyl-type 1,3-dipolar organic compounds Organochlorides Organooxygen compounds Organopnictogen compounds Organic oxides Hydrocarbon derivatives |
| Molecular Framework | Aromatic heteropolycyclic compounds |
| Substituents | 2-naphthalene sulfonic acid or derivatives - 2-naphthalene sulfonate - 1-naphthol - Benzenesulfonate - 1-sulfo,2-unsubstituted aromatic compound - Benzenesulfonyl group - Arylsulfonic acid or derivatives - Aniline or substituted anilines - Amino-1,3,5-triazine - Chloro-s-triazine - 1-hydroxy-4-unsubstituted benzenoid - Halo-s-triazine - Aminotriazine - Triazine - Aryl chloride - Aryl halide - 1,3,5-triazine - Monocyclic benzene moiety - Sulfonyl - Heteroaromatic compound - Organic sulfonic acid or derivatives - Organosulfonic acid or derivatives - Organosulfonic acid - Azo compound - Azacycle - Organoheterocyclic compound - Organic 1,3-dipolar compound - Secondary amine - Propargyl-type 1,3-dipolar organic compound - Organochloride - Organohalogen compound - Organic oxygen compound - Organic nitrogen compound - Amine - Hydrocarbon derivative - Organic oxide - Organonitrogen compound - Organooxygen compound - Organosulfur compound - Organopnictogen compound - Aromatic heteropolycyclic compound |
| Description | This compound belongs to the class of organic compounds known as 2-naphthalene sulfonates. These are organic aromatic compounds that contain a naphthalene moiety that carries a sulfonic acid group at the 2-position. Naphthalene is a bicyclic compound that is made up of two fused benzene ring. |
| External Descriptors | bis(azo) compound - azobenzenes - diamino-1,3,5-triazine - chloro-1,3,5-triazine - naphthalenesulfonic acid |
Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Date | Item |
|---|---|---|---|
 C2604778 | Certificate of Analysis | Apr 01, 2025 | R338921 |
| C2604797 | Certificate of Analysis | Apr 01, 2025 | R338921 |
| D2507685 | Certificate of Analysis | Apr 01, 2025 | R338921 |
| D2507689 | Certificate of Analysis | Apr 01, 2025 | R338921 |
| D2507690 | Certificate of Analysis | Apr 01, 2025 | R338921 |
| I2402306 | Certificate of Analysis | Aug 16, 2024 | R338921 |
| I2402307 | Certificate of Analysis | Aug 16, 2024 | R338921 |
| I2402308 | Certificate of Analysis | Aug 16, 2024 | R338921 |
| I2402309 | Certificate of Analysis | Aug 16, 2024 | R338921 |
| I2402310 | Certificate of Analysis | Aug 16, 2024 | R338921 |
| Solubility | Soluble in water (60-70 mg/ml at 20° C), and 50% ethanol (1 mg/ml). |
|---|---|
| Refractive Index | n20D1.86 (Predicted) |
| Melt Point(°C) | >350° C |
| Molecular Weight | 1338.100 g/mol |
| XLogP3 | 6.400 |
| Hydrogen Bond Donor Count | 12 |
| Hydrogen Bond Acceptor Count | 34 |
| Rotatable Bond Count | 18 |
| Exact Mass | 1335.95 Da |
| Monoisotopic Mass | 1335.95 Da |
| Topological Polar Surface Area | 592.000 Ų |
| Heavy Atom Count | 86 |
| Formal Charge | 0 |
| Complexity | 2910.000 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| The total count of all stereochemical bonds | 0 |
| Covalently-Bonded Unit Count | 1 |
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