3,4-Dichloro-3-cyclobutene-1,2-dione CAS 2892-63-9
| CAS No. | 2892-63-9 |
| Molecular Formula | C4H2Cl2O2 |
| Molecular Weight | 152.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3,4-Dichloro-3-cyclobutene-1,2-dione is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3,4-Dichloro-3-cyclobutene-1,2-dione (CAS 2892-63-9), molecular formula C4H2Cl2O2 and molecular weight 152.96 g/mol, is a CATO reference standard with documented purity and traceability.
3,4-Dichloro-3-cyclobutene-1,2-dione (C4H2Cl2O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 3,4-Dichloro-3-cyclobutene-1,2-dione under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C4H2Cl2O2 |
| Molecular Weight | 152.96 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
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- (R)-2,3-dihydroxy-2-methylpropyl 4-methylbenzenesulfonate (CAS 133868-47-0)
- 2-(Chloromethyl)-5-(methoxymethyl)pyridine (CAS 1469993-03-0)
- N-(4-(Thiazolo[5,4-b]pyridin-2-yl)phenyl)cyclopropanecarboxamide (CAS 863588-57-2)
- N-(2,3-Dimethylphenyl)-2-((3-ethyl-4-oxo-3,4,5,6,7,8-hexahydrobenzo[4,5]thieno[2,3-d]pyrimidin-2-yl)thio)acetamide (CAS 618879-76-8)
- Tirzepatide Impurity 34 (CAS CATO-C4X-324034)
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