3999-67-5 CTK4I2229 tetramethyl 1,2,3,4-cyclobutanetetracarboxylate CAS 3999-67-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 3999-67-5 |
| Molecular Formula | C12H16O8 |
| Molecular Weight | 288.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3999-67-5 CTK4I2229 tetramethyl 1,2,3,4-cyclobutanetetracarboxylate (CAS 3999-67-5) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C12H16O8. Molecular weight: 288.25 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C12H16O8 |
| Molecular Weight | 288.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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 |
Recommended Standards
- Tetramethyl cyclobutane-1,1,2,2-tetracarboxylate (CAS 64374-98-7)
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- Swirchirin (CAS 521-65-3)
- 5,6,7-Trifluoro-1H-indole-2-carboxylic acid (CAS 247564-70-1)
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- 4-(Quinoxalin-2-yl)but-3-en-2-one (CAS 1344857-94-8)
- 4,4′-Dinonyl-2,2′-bipyridine (CAS 142646-58-0)
- tert-Butyl ((1,2,3,4-tetrahydroquinolin-4-yl)methyl)carbamate (CAS 1268522-41-3)
- tert-Butyl 3-oxo-1,2,3,4,5,7-hexahydro-6H-pyrazolo[3,4-c]pyridine-6-carboxylate (CAS 152559-31-4)
- Cyclopeptide-5 (CAS 197172-76-2)
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