Butylphthalide Impurity 25 CAS 3453-63-2
| CAS No. | 3453-63-2 |
| Molecular Formula | C9H6O2 |
| Molecular Weight | 146.14 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Butylphthalide Impurity 25 is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 146.14 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
CATO supplies Butylphthalide Impurity 25 (CAS 3453-63-2), a pharmacopoeial impurity reference standard (molecular formula C9H6O2, MW 146.14 g/mol) used for the identification and quantification of trace impurities in APIs.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Butylphthalide Impurity 25 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H6O2 |
| Molecular Weight | 146.14 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Butylphthalide Standards
- Butylphthalide Impurity 15 (CAS 3453-64-3)
- Butylphthalide Impurity 1 (CAS 119-67-5)
- Butylphthalide Impurity 5 (CAS 612-20-4)
- Butylphthalide Impurity 14 (CAS 61658-90-0)
- Butylphthalide Impurity 30 (CAS 17475-41-1)
- Butylphthalide Impurity 16 (CAS 577-56-0)
- Butylphthalide Impurity C165 (CAS 4767-54-8)
- Butylphthalide Impurity 19 (CAS 17369-59-4)
Recommended Standards
- Fluorouracil Impurity 26 (CAS 62836-98-0)
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- D-Glutamine (CAS 5959-95-5)
- Baclofen Impurity 66 (CAS CATO-C4X-101266)
- Naproxen EP Impurity K (CAS 77301-42-9)
- Molnupiravir Impurity 19 (CAS 2346619-88-1)
- 1,3,6,8-Tetrakis((trimethylsilyl)ethynyl)pyrene (CAS 870258-96-1)
- Methyl 5-(aminomethyl)-2-methylfuran-3-carboxylate (CAS 1156720-34-1)
- 4-(Quinolin-2-ylthio)quinazoline (CAS 102244-03-1)
- 4-[(4-tert-Butylphenyl)methoxy]-6-chloro-2-methyl-3,4,4a,8a-tetrahydro-2H-1-benzothiopyran (CAS 1005100-63-9)
- 4-(Aminomethyl)-N-methoxybenzamide (CAS 1465580-81-7)
- 3-tert-Butyl-N-methylaniline (CAS 1233505-67-3)
- D-Ala21-Tirzepatide (CAS CATO-CPTD788913)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com