3-chloro-2-(ethanesulfonyl)benzaldehyde CAS 1379324-69-2
| CAS No. | 1379324-69-2 |
| Molecular Formula | C9H9ClO3S |
| Molecular Weight | 232.68 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 3-chloro-2-(ethanesulfonyl)benzaldehyde.
3-chloro-2-(ethanesulfonyl)benzaldehyde (CAS 1379324-69-2) is a high-purity analytical reference standard with the molecular formula C9H9ClO3S and a molecular weight of 232.68 g/mol.
Structurally, 3-chloro-2-(ethanesulfonyl)benzaldehyde (C9H9ClO3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 232.68 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C9H9ClO3S |
| Molecular Weight | 232.68 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related chloro Standards
- 2-Chloro-4-(cyclopropylsulfonyl)phenol (CAS 1147558-11-9)
- 5-Chloro-2-(ethanesulfonyl)benzaldehyde (CAS 1379327-84-0)
- 1-(4-Chloro-3-fluorophenyl)-2-(propan-2-yloxy)ethan-1-ol (CAS 1461709-04-5)
- 2-chloro-6-(ethanesulfinyl)benzoic acid (CAS 1803604-34-3)
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Recommended Standards
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- 3-Bromo-2-chloro-4-methylquinoline (CAS 1134335-05-9)
- Methyl 3-(4-(hydroxymethyl)phenyl)picolinate (CAS 1808096-72-1)
- tert-butyl 2-(4-iodopyrazol-1-yl)acetate (CAS 2023463-51-4)
- (E)-4-(Quinolin-3-yl)but-3-en-2-one (CAS 921206-10-2)
- 2,4-bis(trifluoromethyl)[1,2,4]triazolo[4,3-a][1,8]naphthyridin-9-ylamine (CAS 338773-55-0)
- 4-Fluoro-4-methyl-3-oxopentanenitrile (CAS 1188907-26-7)
- Semaglutide impurity 235 (CAS CATO-C4X-2226235)
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