4-(3-(Pyridin-2-yl)ureido)benzene-1-sulfonyl chloride sulfate CAS 811842-68-9
| CAS No. | 811842-68-9 |
| Molecular Formula | C12H11ClN3O3S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-(3-(Pyridin-2-yl)ureido)benzene-1-sulfonyl chloride sulfate (CAS 811842-68-9), molecular formula C12H11ClN3O3SHO4S and molecular weight 409.81 g/mol, is a CATO reference standard with documented purity and traceability.
4-(3-(Pyridin-2-yl)ureido)benzene-1-sulfonyl chloride sulfate (C12H11ClN3O3SHO4S) contains a nitrogen-containing heterocyclic scaffold, 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C12H11ClN3O3S HO4S |
| Molecular Weight | 409.81 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related Pyridin Standards
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- 4-(Pyridin-3-yloxy)benzenesulfonic acid (CAS 1000340-09-9)
- 2-(2-Oxo-2-(pyridin-4-yl)ethylidene)thiazolidin-4-one (CAS 1000932-15-9)
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Recommended Standards
- 2-(4-Ethynylphenyl)acetic acid (CAS 213622-93-6)
- tert-butyl N-[1-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-methyl-2-oxo-pyrimidin-4-yl]carbamate (CAS 2639379-52-3)
- 3-(Methylthio)-4-nitrophenol (CAS 771-94-8)
- 3-(1-Isopropyl-1h-1,2,4-triazol-5-yl)propan-1-ol (CAS 1489705-78-3)
- (2S)-2-(2-cyclohexylphenyl)pyrrolidine (CAS 1213323-40-0)
- 4-((4-Chlorophenyl)sulfonyl)-6-(ethylsulfonyl)-3,4-dihydro-2H-benzo[b][1,4]oxazine-2-carboxylic acid (CAS 866051-02-7)
- (2E)-1-(2,4-Dichlorophenyl)-3-(2,3,4-trimethoxyphenyl)prop-2-en-1-one (CAS 1042979-00-9)
- 4-Chloro-2-(cyclopropylmethoxy)pyridine (CAS 1346707-02-5)
- 2-((4-Fluorobenzyl)amino)cyclopentane-1-carboxylic acid (CAS 1355334-63-2)
- TAT 14 Peptide (Nrf2 Activator III) (CAS 1362661-34-4)
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