4-(Chloromethyl)thiophene-2-carbaldehyde CAS 33148-81-1
| CAS No. | 33148-81-1 |
| Molecular Formula | C6H5ClOS |
| Molecular Weight | 160.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-(Chloromethyl)thiophene-2-carbaldehyde (CAS 33148-81-1), molecular formula C6H5ClOS and molecular weight 160.62 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-(Chloromethyl)thiophene-2-carbaldehyde (C6H5ClOS) contains sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 160.62 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.
Physical & Chemical Properties
| Molecular Formula | C6H5ClOS |
| Molecular Weight | 160.62 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
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Recommended Standards
- 3-Methylthiophene-2-carbonyl chloride (CAS 61341-26-2)
- 4-Chloro-2-mercaptophenol (CAS 21151-77-9)
- 3-Amino-6-chloropyridine-2(1H)-thione (CAS 27467-92-1)
- 5-Chloro-4-methylthiophene-2-carbaldehyde (CAS 65782-04-9)
- 5-Bromo-8-chloroimidazo[1,2-a]pyridine (CAS 1357946-29-2)
- Methyl 1-(5-bromopyrimidin-2-yl)cyclopropanecarboxylate (CAS 1447607-69-3)
- 1-(4-Benzyl-3-oxo-3,4-dihydropyrazin-2-yl)piperidine-3-carboxylic acid (CAS 1710833-84-3)
- 1,1'-[Biphenyl-4,4'-diylbis(methylene)]bis(4,4'-bipyridinium) Dibromide (CAS 2232875-70-4)
- 8-oxo-5H-1,5-naphthyridine-2-carbonitrile (CAS 2006287-24-5)
- 5-Bromopyrrolo[2,1-f][1,2,4]triazin-4-amine (CAS 937047-47-7)
- 2-((4-Chloro-N-(2,4-dichloro-5-(2-methoxyethoxy)phenyl)phenyl)sulfonamido)-N-methylacetamide (CAS 338967-67-2)
- 2-(chloromethyl)-2H-1,2,3-triazole (CAS 80199-90-2)
- Halowax 1014 (CAS 1335-87-1)
- SV40 Nuclear Transport Signal Peptide Analog (CAS 104914-40-1)
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