2-Hydroxy-5-methoxycyclohexa-2,5-diene-1,4-dione CAS 5691-70-3
| CAS No. | 5691-70-3 |
| Molecular Formula | C7H6O4 |
| Molecular Weight | 154.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H6O4, 2-Hydroxy-5-methoxycyclohexa-2,5-diene-1,4-dione 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 154.12 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).
2-Hydroxy-5-methoxycyclohexa-2,5-diene-1,4-dione (CAS 5691-70-3), molecular formula C7H6O4 and molecular weight 154.12 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C7H6O4 |
| Molecular Weight | 154.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Hydroxy Standards
- 2-(6-Hydroxy-4-pyrimidinyl)acetic acid (CAS 1119449-91-0)
- 6-Hydroxy-5-methylpyrimidine-4-carboxylic acid (CAS 1159010-94-2)
- 2-Hydroxy-4-methylpyrimidine-5-carboxylic acid (CAS 13008-17-8)
- 5-Hydroxy-2-methylpyrimidine-4-carboxylic acid (CAS 1504287-88-0)
- 3-Hydroxy-2-methyl-4-nitropyridine (CAS 15128-83-3)
- 3-Hydroxy-2-methyl-6-nitropyridine (CAS 15128-84-4)
- 3-Hydroxy-4-methyl-2-nitropyridine (CAS 15128-89-9)
- 3-Hydroxy-6-methyl-2-nitropyridine (CAS 15128-90-2)
Recommended Standards
- 2-Hydroxy-4-methyl-5-nitropyridine, 98% (CAS 21901-41-7)
- 2-Methoxy-3-nitropyridine (CAS 20265-35-4)
- 2-Hydroxy-3-methyl-5-nitropyridine (CAS 21901-34-8)
- 2-Methoxy-5-nitropyridine (CAS 5446-92-4)
- Dynorphin A (1-8) (CAS 75790-53-3)
- 4-Bromo-2,3-difluoro-6-iodo-1-(trimethylsilyl)benzene (CAS 1807646-35-0)
- 1335041-92-3 (+/-)-3-Amino-3-methylpent-4-enoic acid hydrochloride MFCD20481904 (CAS 1335041-92-3)
- 2-(Piperidin-3-yl)propan-2-ol hydrochloride (CAS 1003560-59-5)
- Lithium triisopropyl 2-pyridylborate (CAS 213764-22-8)
- Dimethyl p-tolylboronate (CAS 40881-45-6)
- 1-(2-Chloroethyl)-5-(2,4-dichlorophenyl)-1H-pyrazole (CAS 1710302-42-3)
- 5-Fluoro-2-methyl-N-(thiazol-5-ylmethyl)aniline (CAS 1342214-91-8)
- 2-Pyridinealdoxime O-Propyl Ether (CAS 71172-62-8)
- (Des-Thr?)-Glucagon trifluoroacetate salt (CAS 1802078-27-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com