Cyclobut-1-ene-1,2-dicarboxylic acid CAS 16508-05-7
| CAS No. | 16508-05-7 |
| Molecular Formula | C6H6O4 |
| Molecular Weight | 142.11 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 Cyclobut-1-ene-1,2-dicarboxylic acid.
Cyclobut-1-ene-1,2-dicarboxylic acid (CAS 16508-05-7) is a high-purity analytical reference standard with the molecular formula C6H6O4 and a molecular weight of 142.11 g/mol.
Based on its molecular formula C6H6O4, Cyclobut-1-ene-1,2-dicarboxylic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 142.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C6H6O4 |
| Molecular Weight | 142.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
Related Cyclobut Standards
- 1-(cyclobut-1-en-1-yl)-4-ethenylbenzene 3-ethenylbicyclo[4,2,0]octa-1,3,5-triene 3-vinylbicyclo[4.2.0]octa-1,3,5-triene 4-Vinylbenzocyclobutene 4-vbcb 4-vinylbenzocyclobutene 4-vinylbenzocyclobutene /3-ethenylbicyclo[4,2,0]octa-1,3,5-triene 4-vinylbenzocyclobutene 97% 8-Methyl-8-azabicyclo[3.2.1]oct-6-en-3-ol hydrochloride 99717-87-0 vbcb (CAS 99717-87-0)
- 2-(Cyclobut-1-en-1-yl)pyridine (CAS 291778-15-9)
- Ethyl cyclobut-1-ene-1-carboxylate (CAS 181941-46-8)
- cis-Cyclobut-3-ene-1,2-dicarboxylic Anhydride (CAS 10374-07-9)
- Methyl cyclobut-2-ene-1-carboxylate (CAS 15963-45-8)
- Methyl cyclobut-1-ene-1-carboxylate (CAS 40628-41-9)
- (Cyclobut-2-en-1-yl)methanol (CAS 15963-49-2)
- Cyclobut-1-en-1-ylmethanol (CAS 89182-08-1)
Recommended Standards
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