5-[[p-(Chlorosulfonyl)phenyl]azo]salicylic Acid Methyl Ester Acetate CAS 34265-47-9
| CAS No. | 34265-47-9 |
| Molecular Formula | C16H13ClN2O6S |
| Molecular Weight | 396.80 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-[[p-(Chlorosulfonyl)phenyl]azo]salicylic Acid Methyl Ester Acetate (C16H13ClN2O6S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
5-[[p-(Chlorosulfonyl)phenyl]azo]salicylic Acid Methyl Ester Acetate (CAS 34265-47-9), molecular formula C16H13ClN2O6S and molecular weight 396.80 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-[[p-(Chlorosulfonyl)phenyl]azo]salicylic Acid Methyl Ester Acetate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C16H13ClN2O6S |
| Molecular Weight | 396.80 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related p Standards
- Benzyl 5-(chlorosulfonyl)-7-nitro-2,3-dihydro-1H-indole-1-carboxylate (CAS 1710628-73-1)
- Benzyl 4-(4-(chlorosulfonyl)phenyl)piperazine-1-carboxylate (CAS 125393-31-9)
- 3-Chlorosulfonyl-4-(2-hydroxy-phenyl)-5-trifluoro-methyl-thiophene-2-carboxylic acid methyl ester (CAS 1431555-15-5)
- 4-Chlorosulfonyl-2-trifluoromethyl-[2,3]-bithiophenyl-5-carboxylic acid methyl ester (CAS 1431555-28-0)
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- 4-(3-(5-(Chlorosulfonyl)naphthalen-1-yl)ureido)benzoic acid (CAS 1032507-49-5)
- Methyl 3-(chlorosulfonyl)-4-phenyl-5-(trifluoromethyl)thiophene-2-carboxylate (CAS 306935-98-8)
- 3-Chlorosulfonyl-4-(2-methoxy-phenyl)-5-trifluoro-methyl-thiophene-2-carboxylic acid methyl ester (CAS 1431555-14-4)
Recommended Standards
- N-[(4-Chlorophenyl)methyl]-7-fluoro-2-methyl-5-oxo-5H-chromeno[2,3-b]pyridine-3-carboxamide (CAS 338778-25-9)
- PF-6422899 (CAS 1621002-23-0)
- N1-(5-{[2-oxo-2-(2,3,4-trifluoroanilino)ethyl]thio}-1,3,4-thiadiazol-2-yl)-2-chloroacetamide (CAS 244639-93-8)
- 1-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-3-methyl-4-[4-(propan-2-yl)phenyl]-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 860785-30-4)
- Fmoc-4-fluoro-α-Me-Phe-OH · DCHA (CAS 1175838-03-5)
- 1189567-17-6 Methyl 9-oxo-9H-imidazo[1,5-a]indole-1-carboxylate (CAS 1189567-17-6)
- 4-Chlorophenyl cyclobutyl ketone (CAS 77585-25-2)
- Dimethyl 7-Oxabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylate (CAS 1829-60-3)
- 3-Methyl-benzo[d]isoxazole-5-carbonitrile (CAS 267875-57-0)
- 3-(Isocyanatomethyl)-1,3-diazinane-2,4-dione (CAS 861359-45-7)
- N-(tert-Butyldimethylsilyl)-N-methyltrifluoroacetamide (CAS 77377-52-7)
- 870987-63-6 (4,4'-Di-t-butyl-2,2'-bipyridine)bis[3,5-difluoro-2-[5-trifluoromethyl-2-pyridinyl-k-N)phenyl-k-C]iridium(III) PF6 MFCD27952556 (CAS 870987-63-6)
- 2-Hydroxy-2,2-diphenylacetonitrile (CAS 4746-48-9)
- Des-Gly34-Tirzepatide (CAS CATO-CPTD788940)
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