3940AF 7-Methoxy-2,1,3-benzoxadiazole-4-sulfonyl chloride 944780-94-3 C7H5ClN2O4S CAS 944780-94-3
| CAS No. | 944780-94-3 |
| Molecular Formula | C7H5ClN2O4S |
| Molecular Weight | 248.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3940AF 7-Methoxy-2,1,3-benzoxadiazole-4-sulfonyl chloride 944780-94-3 C7H5ClN2O4S.
3940AF 7-Methoxy-2,1,3-benzoxadiazole-4-sulfonyl chloride 944780-94-3 C7H5ClN2O4S (CAS 944780-94-3) is a high-purity analytical reference standard with the molecular formula C7H5ClN2O4S and a molecular weight of 248.64 g/mol.
The molecular framework of 3940AF 7-Methoxy-2,1,3-benzoxadiazole-4-sulfonyl chloride 944780-94-3 C7H5ClN2O4S (C7H5ClN2O4S) is characterized by an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 3940AF 7-Methoxy-2,1,3-benzoxadiazole-4-sulfonyl chloride 944780-94-3 C7H5ClN2O4S 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 | C7H5ClN2O4S |
| Molecular Weight | 248.64 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related AF Standards
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- 2-Methoxy-3-phenylpropane-1-sulfonyl chloride (CAS 1895659-24-1)
- 4-Methoxy-3-(propan-2-yl)benzene-1-sulfonyl chloride (CAS 627082-12-6)
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- 2-Chlorphenylphosphonsaeurediethylester 28036-18-2 (CAS 28036-18-2)
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- 2-(Cyclopentylmethoxy)ethane-1-sulfonyl chloride (CAS 1535312-81-2)
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- cis-2-(Hydroxymethyl)piperidin-4-ol (CAS 955082-77-6)
- 1,4-Cyclohexanedimethanol Dilaurate (CAS 135025-34-2)
- 6-(4-Oxo-5-(3-phenylallylidene)-2-thioxothiazolidin-3-yl)hexanoic acid (CAS 15059-29-7)
- 6,7-dimethoxy-2,3-dihydro-1-benzofuran-3-one (CAS 7169-38-2)
- 2-(3-Butyn-1-yloxy)acetic acid (CAS 121318-21-6)
- 4,4'-(Chloromethylene)bis(methoxybenzene) (CAS 7525-23-7)
- ([D?]Val?·1?)-C-Peptide (human) (CAS 1802078-41-6)
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