1,2,3,4-Tetramethyl-1,2,3,4-cyclobutanetetracarboxylic Dianhydride CAS 64198-16-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 64198-16-9 |
| Molecular Formula | C12H12O6 |
| Molecular Weight | 252.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,2,3,4-Tetramethyl-1,2,3,4-cyclobutanetetracarboxylic Dianhydride (CAS 64198-16-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C12H12O6. Molecular weight: 252.22 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C12H12O6 |
| Molecular Weight | 252.22 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
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Recommended Standards
- 1-(2,6-Difluorobenzyl)-6-methylpyrimidine-2,4(1H,3H)-dione (CAS 352303-65-2)
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- 1-((2R,3S,4S,5R)-3-Ethynyl-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione (CAS 517893-32-2)
- 4-Furan-2-yl-8-methoxy-2,3,3a,4,5,9b-hexahydro-furo[3,2-c]quinoline (CAS 745787-23-9)
- (S)-3-(1-Aminoethyl)-4,8-dichloro-2-phenylisoquinolin-1(2H)-one (CAS 2055766-86-2)
- 3-(trideuteriomethoxy)propan-1-amine (CAS 2790397-48-5)
- Guanethidine Monosulfate (200 mg) (CAS 645-43-2)
- N-Formylbenzamide (CAS 4252-31-7)
- N-Ethyl-1-((pyridin-3-yloxy)methyl)cyclopropanamine (CAS 959957-74-5)
- Semaglutide Impurity 163 (x TFA Salt) (CAS CATO-C4X-2226163)
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