1-(2,5-Dichlorothiophen-3-yl)-2-phenylethan-1-one CAS 99979-31-4
| CAS No. | 99979-31-4 |
| Molecular Formula | C12H8Cl2OS |
| Molecular Weight | 271.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1-(2,5-Dichlorothiophen-3-yl)-2-phenylethan-1-one (CAS 99979-31-4) is a high-purity analytical reference standard with the molecular formula C12H8Cl2OS and a molecular weight of 271.16 g/mol.
Structurally, 1-(2,5-Dichlorothiophen-3-yl)-2-phenylethan-1-one (C12H8Cl2OS) 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 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 271.16 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C12H8Cl2OS |
| Molecular Weight | 271.16 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
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Recommended Standards
- (S)-3'-Bromo-4'H,6'H-spiro[piperidine-4,5'-pyrrolo[1,2-b]pyrazol]-4'-amine (CAS 2843690-95-7)
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- tert-Butyl (2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)ethyl)carbamate (CAS 1850305-79-1)
- 1-(3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-2,5-dihydro-1H-pyrrole (CAS 864754-36-9)
- Methyl 3-(4-bromobenzamido)thiophene-2-carboxylate (CAS 355384-02-0)
- (6,7-Dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)(3,4,5-trimethoxyphenyl)methanone (CAS 692733-13-4)
- (R)-3-(Pyrrolidin-3-yl)-3,4-dihydro-1H-benzo[c][1,2,6]thiadiazine 2,2-dioxide (CAS 1389441-90-0)
- 5-Chloro-2-hydroxynicotinonitrile (CAS 1048913-62-7)
- tert-Butyl 1-Cbz-pyrrolidine-3-carboxylate (CAS 1820675-44-2)
- 2-(Cyclopentylsulfanyl)-4-methylbenzoic acid (CAS 1340160-17-9)
- Methyl 2,3-dihydro-1H-pyrrolo[3,2-c]pyridine-7-carboxylate (CAS 2306264-09-3)
- 7-(4-Methylphenyl)-5-phenyl-7H-pyrrolo[2,3-d]pyrimidin-4-ol (CAS 865546-60-7)
- 5-(4-Chlorophenyl)-3,4-dihydro-2H-pyran (CAS 1467061-90-0)
- Lixisenatide (CAS 320367-13-3)
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