4-MEthanesulfonyl-1,2-dihydroisoquinolin-1-one CAS 1820664-84-3
| CAS No. | 1820664-84-3 |
| Molecular Formula | C10H9NO3S |
| Molecular Weight | 223.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-MEthanesulfonyl-1,2-dihydroisoquinolin-1-one (CAS 1820664-84-3), molecular formula C10H9NO3S and molecular weight 223.25 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-MEthanesulfonyl-1,2-dihydroisoquinolin-1-one (C10H9NO3S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C10H9NO3S |
| Molecular Weight | 223.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related MEthanesulfonyl Standards
- 1184914-68-8 6-(Methanesulfonyl)isoquinolin-1(2H)-one DTXSID90654950 (CAS 1184914-68-8)
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- 5-Methanesulfonyl-2-propylpentanoic acid (CAS 1341347-14-5)
- 2-methanesulfonyl-1-(methoxycarbonyl)cyclopropane-1-carboxylic acid (CAS 2059927-37-4)
- 5-Methanesulfonyl-2,3-dihydro-1H-indole-2,3-dione (CAS 222036-53-5)
- 2-methanesulfonyl-4-methyl-1,3-thiazole-5-carboxylic acid (CAS 1779944-56-7)
- 2-Methanesulfonyl-2,3-dihydro-1H-isoquinolin-4-one (CAS 1235981-58-4)
- 2-(4-methanesulfonyl-3-methoxyphenyl)acetonitrile (CAS 1269152-58-0)
Recommended Standards
- 7-(Methylsulfonyl)quinolin-3-ol (CAS 1824103-05-0)
- 3-(3-Fluorophenyl)quinoline (CAS 181421-88-5)
- 4-(Prop-1-en-2-yl)benzoic acid (CAS 1830-69-9)
- 2-(2-(Methylthio)benzo[d]oxazol-7-yl)acetic acid (CAS 1806321-75-4)
- 3-[[Dimethyl(vinyl)silyl]oxy]-1,1,5,5-tetramethyl-3-phenyl-1,5-divinyltrisiloxane (CAS 60111-47-9)
- 5-Bromo-1-methyl-2-(o-tolyl)-1H-imidazole (CAS 1415562-59-2)
- 7-(2-Fluorophenyl)-1H-indole-3-carbaldehyde (CAS 1214338-55-2)
- 2-Cyclopropoxy-N-methylbenzamide (CAS 1243397-60-5)
- A 26771B (CAS 56448-20-5)
- tert-Butyl (1-(2-methoxypyrimidin-4-yl)piperidin-4-yl)carbamate (CAS 1420816-86-9)
- 4-(4-(Trifluoromethyl)phenyl)oxazole (CAS 1126636-40-5)
- 1-(6-(Trifluoromethyl)-3H-imidazo[4,5-b]pyridin-2-yl)ethanamine (CAS 1707727-62-5)
- (Z)-2-(4-Fluorophenyl)-3-(thiophen-2-yl)acrylonitrile (CAS 347-19-3)
- D-β-Asp9-Tirzepatide (CAS CATO-CPTD788932)
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