Clonidine CAS 4205-90-7
| CAS No. | 4205-90-7 |
| Molecular Formula | C9H9Cl2N3 |
| Molecular Weight | 230.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Clonidine (C9H9Cl2N3) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Clonidine (CAS 4205-90-7), a certified reference material (molecular formula C9H9Cl2N3, MW 230.09 g/mol) for analytical method development and quality control.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), Clonidine 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 | C9H9Cl2N3 |
| Molecular Weight | 230.09 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Clonidine Standards
- Clonidine Impurity 3 (CAS 27806-81-1)
- Clonidine Impurity 1 (CAS 21709-18-2)
- Clonidine Impurity 5 (CAS 39075-78-0)
- Clonidine Impurity 7 (CAS CATO-C4X-15947)
- Clonidine Impurity 2 (CAS 10113-35-6)
- Clonidine EP Impurity B (CAS 54707-71-0)
- Clonidine Impurity 8 (CAS 148950-50-9)
- Clonidine EP Impurity C (CAS 608-31-1)
Recommended Standards
- Tolvaptan Impurity 77 (CAS CATO-C4X-195577)
- Chloranocryl (CAS 2164-09-2)
- Tolvaptan Impurity 74 (CAS CATO-C4X-195574)
- [2-(3-Bromophenoxy)ethyl](methyl)amine (CAS 100607-15-6)
- Ethyl 2-(hydroxymethyl)cyclobutane-1-carboxylate (CAS 90113-34-1)
- 1-(3-Fluorophenyl)piperidin-3-amine dihydrochloride (CAS 1311316-92-3)
- 5-Amino-3,3-difluoropiperidine-2,6-dione (CAS 2151858-58-9)
- (2-Chloropyridin-3-yl)(4-(2-hydroxyethyl)piperazin-1-yl)methanone (CAS 444791-56-4)
- 5-(Tributylstannyl)-2-(triisopropylsilyl)oxazole (CAS 869542-43-8)
- Roxatidine Impurity 21 (CAS 108441-34-5)
- 3-(Benzo[d][1,3]dioxol-5-ylmethylene)furan-2,4(3H,5H)-dione (CAS 87191-93-3)
- [4,4′-Bis(trifluoromethyl)-2,2′-bipyridine-κN1,κN1′]bis[5-fluoro-2-(2-pyridinyl-κN)phenyl-κC]-, (OC-6-33)-Iridium(1+), hexafluorophosphate(1-) (1:1) (CAS 2757085-01-9)
- 2-(Dimethylamino)-2-(4-methoxyphenyl)-acetonitrile hydrochloride (CAS 15190-19-9)
- Des-Ser34-Gly33Tirzepatide (CAS CATO-CPTD788941)
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