2,3-Dichloro-1,4-dimethylbenzene CAS 34840-79-4
| CAS No. | 34840-79-4 |
| Molecular Formula | C16H17N3O5S |
| Molecular Weight | 363.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2,3-Dichloro-1,4-dimethylbenzene (CAS 34840-79-4), a certified reference material (molecular formula C16H17N3O5S, MW 363.39 g/mol) for analytical method development and quality control.
2,3-Dichloro-1,4-dimethylbenzene (C16H17N3O5S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C16H17N3O5S |
| Molecular Weight | 363.39 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Dichloro Standards
- 2,3-Dichloro-3'-(4-methylpiperazinomethyl) benzophenone (CAS 898789-21-4)
- 2,3-Dichloro-4-(4-methylpiperazinomethyl) benzophenone (CAS 898763-18-3)
- 2,4-Dichloro-2-(4-methylpiperazinomethyl) benzophenon (CAS 898762-33-9)
- 2,4-Dichloro-3'-(4-methylpiperazinomethyl) benzophenone (CAS 898789-23-6)
- 2,4-Dichloro-4-(4-methylpiperazinomethyl) benzophenone (CAS 898763-21-8)
- 2,5-Dichloro-2-(4-methylpiperazinomethyl) benzophenone (CAS 898762-36-2)
- 2,5-Dichloro-3'-(4-methylpiperazinomethyl) benzophenone (CAS 898789-25-8)
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Recommended Standards
- 2-(4-(2-Fluoro-5-(3-(6-methylpyridin-2-yl)-1H-pyrazol-4-yl)phenyl)-1H-pyrazol-1-yl)ethan-1-ol (CAS 879487-87-3)
- 2-Phenoxy-N-(5-(thiophen-2-yl)-1,3,4-oxadiazol-2-yl)benzamide (CAS 865288-09-1)
- 2-((5-(2,3-Dihydrobenzo[b][1,4]dioxin-2-yl)-1,3,4-oxadiazol-2-yl)thio)-1-morpholinoethan-1-one (CAS 851129-98-1)
- 4-(1,3-Dioxoisoindolin-2-yl)-N-(4-methylthiazol-2-yl)benzamide (CAS 378213-74-2)
- 51760-23-7 Benzene, 1-bromo-3,5-bis(bromomethyl)- KS-000001NV (CAS 51760-23-7)
- Heptakis-(2,6-di-O-ethyl)-β-cyclodextrin (CAS 111689-03-3)
- 1-bromo-2,3,5,6-tetradeuterio-4-iodo-benzene (CAS 1147565-46-5)
- Arecoline-d5 Hydrobromide Salt (CAS 131448-18-5)
- 2-Amino-5-[(4-ethyl-1-piperazinyl)methyl]pyridine (CAS 1180132-17-5)
- H-Phe-Met-Arg-Phe-NH2 acetate salt (CAS 152165-14-5)
- 4-Methoxy-6-pentyl-2H-pyran-2-one (CAS 109746-09-0)
- N-(Cyclohexylmethyl)-2-(methylthio)nicotinamide (CAS 794537-28-3)
- 4-Chloro-6-methoxy-7-methyl-1H-indole (CAS 1167056-82-7)
- Semaglutide Impurity 6 (CAS 62-57-7)
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