3-[4-[2-(2,5-Dichloro-4-nitrophenyl)ethyl]-1-piperazinyl]-1,2-benzisothiazole CAS 160384-38-3
| CAS No. | 160384-38-3 |
| Molecular Formula | C19H18Cl2N4O2S |
| Molecular Weight | 437.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, 3-[4-[2-(2,5-Dichloro-4-nitrophenyl)ethyl]-1-piperazinyl]-1,2-benzisothiazole is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 437.34 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
3-[4-[2-(2,5-Dichloro-4-nitrophenyl)ethyl]-1-piperazinyl]-1,2-benzisothiazole (CAS 160384-38-3), molecular formula C19H18Cl2N4O2S and molecular weight 437.34 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.
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 | C19H18Cl2N4O2S |
| Molecular Weight | 437.34 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Dichloro Standards
- (2Z)-2,3-Dichloro-N-(6-methoxypyridin-3-yl)-3-({[3-(trifluoromethyl)phenyl]methyl}sulfanyl)prop-2-enamide (CAS 337922-07-3)
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Recommended Standards
- ((2R,3S,4R,5R)-5-(6-(Benzylamino)-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl dihydrogen phosphate (CAS 13484-66-7)
- 1,1-Bis(4-chlorophenyl)-2-(4-methoxybenzenesulfonyl)ethan-1-ol (CAS 337919-97-8)
- methyl 3-[bis(tert-butoxycarbonyl)amino]-5-bromo-pyridine-2-carboxylate (CAS 2615357-68-9)
- Pentafluorophenyl 2-(morpholin-4-ylsulphonyl)benzoate (CAS 950603-27-7)
- <SC>DL</SC>-Alanine-3-<SUP>13</SUP>C (CAS 131157-42-1)
- 4-(Trichloromethyl)benzoyl chloride (CAS 14815-86-2)
- tert-Butyl 7-methoxy-3,4-dihydro-2,6-naphthyridine-2(1H)-carboxylate (CAS 1279820-42-6)
- 1-Bromo-4-(2-phenylmethoxyethyl)benzene (CAS 170991-34-1)
- [1,3]Dioxolo[4,5-g]quinoline (CAS 269-51-2)
- (R)-3-Methyl-5-(pyrrolidin-2-yl)isoxazole (CAS 147402-72-0)
- 2-(2-Bromobenzylidene)-4-hydroxy-6-methylbenzofuran-3(2H)-one (CAS 929450-93-1)
- p-Tolyl 2-amino-5-iodobenzoate (CAS 1131587-20-6)
- Blonanserin Impurity 12 (CAS 142838-82-2)
- Semaglutide impurity 32 (CAS CATO-C4X-222632)
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