Butylphthalide Impurity 18 CAS CATO-C4X-181318
| CAS No. | CATO-C4X-181318 |
| Molecular Formula | C13H14O2 |
| Molecular Weight | 202.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Butylphthalide Impurity 18 (CAS CATO-C4X-181318), a pharmacopoeial impurity reference standard (molecular formula C13H14O2, MW 202.25 g/mol) used for the identification and quantification of trace impurities in APIs.
Butylphthalide Impurity 18 (C13H14O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Butylphthalide Impurity 18 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 | C13H14O2 |
| Molecular Weight | 202.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >90% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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 |
Related Butylphthalide Standards
- Butylphthalide Impurity 76 (CAS 90965-68-7)
- Butylphthalide Impurity 17 (CAS 691863-84-0)
- Butylphthalide Impurity 53 (CAS 122654-49-3)
- Butylphthalide Impurity 40 (CAS 1485081-46-6)
- Butylphthalide Impurity 78 (CAS 2944272-81-3)
- Butylphthalide Impurity 11 (CAS 111943-62-5)
- 3-Butylphthalide-d9 (CAS CATO-C3D-5711)
- Butylphthalide Impurity 24 (CAS 20871-32-3)
Recommended Standards
- Naproxen EP Impurity K (CAS 77301-42-9)
- Glycopyrrolate Impurity 6 (CAS 126497-27-6)
- Brivaracetam Impurity 188 (CAS CATO-C4X-2007188)
- Ondansetron Impurity 15 (CAS 27385-45-1)
- Faropenem Impurity 19 (CAS CATO-C4X-128919)
- Dexamethasone Impurity 58 (CAS CATO-C4X-116558)
- Salmeterol Impurity 12 (CAS 108928-82-1)
- 8-Methoxy-2-methyl-[1,2,4]triazolo[1,5-c]pyrimidine (CAS 106921-55-5)
- 5746-58-7 (12S)-12-Methyltetradecanoic acid DTXSID70581533 (CAS 5746-58-7)
- Ethyl 3-Amino-4-(methylamino)benzoate (CAS 66315-23-9)
- Solavetivone (CAS 54878-25-0)
- 2-Methyl-5,6,7,8-tetrahydroquinazolin-5-amine (CAS 927803-66-5)
- Metoclopramide Impurity 90 (CAS CATO-C4X-141590)
- [a-Glu](Side chain transposition)- Semaglutide (CAS CATO-C4X-2226111)
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