Dorzolamide Impurity 3 CAS CATO-C4X-12283
| CAS No. | CATO-C4X-12283 |
| Molecular Formula | C10H16N2O4S3 |
| Molecular Weight | 324.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Dorzolamide Impurity 3 (CAS CATO-C4X-12283), a pharmacopoeial impurity reference standard (molecular formula C10H16N2O4S3, MW 324.44 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Dorzolamide Impurity 3 (C10H16N2O4S3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 324.44 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Dorzolamide Impurity 3 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 | C10H16N2O4S3 |
| Molecular Weight | 324.44 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 3 |
Related Dorzolamide Standards
- Dorzolamide (CAS 120279-96-1)
- Rac-Dorzolamide (CAS 120280-13-9)
- Dorzolamide (CAS 139066-77-6)
- Dorzolamide EP Impurity B（R,S-Isomer) (CAS 149249-72-9)
- Dorzolamide EP Impurity A (CAS 120279-95-0)
- Dorzolamide Impurity 13 (CAS 897657-78-2)
- Dorzolamide-d5 (CAS 1227097-70-2)
- Dorzolamide Impurity 22 (CAS 147128-79-8)
Recommended Standards
- 2-({1-methyl-1h-pyrazolo[3,4-d]pyrimidin-4-yl}sulfanyl)-5-(propylsulfanyl)-1,3,4-thiadiazole (CAS 1007805-27-7)
- (4-Carboxyphenyl)diphenylphosphine 2129-31-9 4-(Diphenylphosphino)benzoic acid Diphenyl(p-carboxyphenyl) phosphine p-(Diphenylphosphino)benzoic acid (CAS 2129-31-9)
- 6-Bromo-2-chloro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1247726-85-7)
- rel-((1R,2R,5S)-2-Isopropyl-5-methylcyclohexyl)diphenylphosphane (CAS 32511-22-1)
- Empagliflozin impurity 327 (CAS CATO-C4X-1065327)
- Barloxavir impurity 95 (CAS CATO-C4X-210895)
- Salicylic acid Impurity 28 (CAS 32499-37-9)
- 1-Methyl-3-pyrrolidinyl Benzoate (CAS 13220-17-2)
- 3-Methyl-2-buten-1-ol-d (CAS 53439-16-0)
- Obeticholic Acid Impurity 8 (CAS 1908444-28-9)
- H-Val-Tyr-Ser-bNA (K-1540.0250) (CAS 13989-68-9)
- 3-(3-Fluorophenyl)-5-(piperidin-2-yl)-1,2,4-oxadiazole hydrochloride (CAS 1956366-77-0)
- Ethyl 6-Quinolinecarboxylate (CAS 73987-38-9)
- Liraglutide Impurity 13 TFA Salt (CAS CATO-C4X-199213)
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