5-(Ethylamino)naphthalene-1-sulfonyl chloride CAS 728864-90-2
| CAS No. | 728864-90-2 |
| Molecular Formula | C12H12ClNO2S |
| Molecular Weight | 269.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-(Ethylamino)naphthalene-1-sulfonyl chloride (CAS 728864-90-2), molecular formula C12H12ClNO2S and molecular weight 269.75 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-(Ethylamino)naphthalene-1-sulfonyl chloride (C12H12ClNO2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 269.75 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 5-(Ethylamino)naphthalene-1-sulfonyl chloride under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H12ClNO2S |
| Molecular Weight | 269.75 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 5-(5-Chloro-2-methoxyphenyl)-4-ethyl-4H-1,2,4-triazole-3-thiol (CAS 369394-90-1)
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- 5-(4-Chlorophenyl)-4-(2-methoxyethyl)-4h-1,2,4-triazole-3-thiol (CAS 26438-54-0)
- 5-[1-(3-Chlorophenoxy)ethyl]-4-methyl-4H-1,2,4-triazole-3-thiol (CAS 667414-17-7)
- (5-Bromopyridin-2-yl)(4-methylpiperazin-1-yl)methanone (CAS 909712-01-2)
- (2-Hydroxy-5-methyl-1,3-phenylenE)bis(methylenE) diacetate (CAS 109129-38-6)
- 6-Amino-3-methyl-3,4-dihydropyrimidin-2(1H)-one (CAS 195045-33-1)
- Tert-butyl 6-(aminomethyl)-3-azabicyclo[3.1.0]Hexane-3-carboxylate (CAS 1272425-00-9)
- 4-ethyl-12-(trifluoromethyl)-2,3,7,13-tetrazatricyclo[7.4.0.0²⁶]trideca-1(13),3,5,9,11-pentaen-8-one (CAS 2649318-85-2)
- 4-(2-Morpholinoethyl)tetrahydro-2h-pyran-4-carboxylic acid (CAS 1514600-78-2)
- 5-Chloro-1,3,3-trimethylindoline (CAS 66113-37-9)
- 3-hydroxy-N-(2-hydroxyethyl)benzamide (CAS 15788-99-5)
- 4-((3,4-Difluorophenyl)ethynyl)phenol (CAS 331718-48-0)
- Peptide 440 (CAS CATO-CPTD788440)
Why CATO?
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