Timolol EP Impurity J CAS CATO-C4X-149612
| CAS No. | CATO-C4X-149612 |
| Molecular Formula | C16H32N4O4S |
| Molecular Weight | 376.51 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Timolol EP Impurity J (CAS CATO-C4X-149612) is a certified pharmaceutical impurity reference standard with the molecular formula C16H32N4O4S and a molecular weight of 376.51 g/mol.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, Timolol EP Impurity J is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 376.51 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).
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.
CATO manufactures Timolol EP Impurity J under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C16H32N4O4S |
| Molecular Weight | 376.51 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Timolol Standards
- Timolol Impurity 21 (CAS CATO-C4X-149621)
- Timolol Impurity 23 (CAS CATO-C4X-149623)
- Timolol Impurity 25 (CAS CATO-C4X-149625)
- Timolol Impurity 28 (CAS CATO-C4X-149628)
- Timolol EP Impurity E (CAS 1026075-53-5)
- Timolol Impurity 18 (CAS CATO-C4X-149618)
- Timolol Impurity 24 (CAS CATO-C4X-149624)
- Timolol EP Impurity B(Mixture of Enantiomers) (CAS 59697-06-2)
Recommended Standards
- tert-butyl trans-3-[2-(p-tolylsulfonyloxy)ethoxy]cyclobutanecarboxylate (CAS 2375165-18-5)
- 4-Amino-2-benzylthio-5-tosylthiazole (CAS 117420-86-7)
- tert-butyl cis-3-{2-[(4-methylbenzenesulfonyl)oxy]ethoxy}cyclobutane-1-carboxylate (CAS 2173637-23-3)
- 5-[2-(9h-carbazol-9-yl)ethyl]-4-cyclohexyl-4h-1,2,4-triazole-3-thiol (CAS 328556-77-0)
- Regadenoson Impurity 4 (CAS CATO-C4X-19854)
- Domperidone Impurity 11 (CAS 85443-52-3)
- Lifitegrast Impurity 88 (CAS CATO-C4X-240988)
- 3-Nitrocoumarin (CAS 28448-04-6)
- Ranitidine Related Compound A (50 mg) (5-{[(2-Aminoethyl)thio]methyl}-N,N-dimethyl-2-furanmethanamine hemifumarate) (CAS 256948-32-0)
- PGE2-EA (CAS 194935-38-1)
- 2-(Difluoromethyl)-6-fluoro-4-iodopyridine-3-carbonyl chloride (CAS 1806924-74-2)
- 4-Benzoyl-1,3-dimethyl-1H-pyrazol-5(4H)-one (CAS 63156-25-2)
- (2S,3S,4R,5R,6S)-2-fluoro-6-methyltetrahydro-2H-pyran-3,4,5-triyl triacetate (CAS 129864-97-7)
- Bradykinin-Like Neuropeptide (Aplysia californica) (H-1654.0001) (CAS 165174-60-7)
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