Chlorhexidine CAS 55-56-1
| CAS No. | 55-56-1 |
| Molecular Formula | C22H30Cl2N10 |
| Molecular Weight | 505.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Chlorhexidine (C22H30Cl2N10) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 505.45 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).
Chlorhexidine (CAS 55-56-1) is a high-purity analytical reference standard with the molecular formula C22H30Cl2N10 and a molecular weight of 505.45 g/mol.
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), Chlorhexidine 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 | C22H30Cl2N10 |
| Molecular Weight | 505.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at room temperature, protect from light |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 10 |
Related Chlorhexidine Standards
- Chlorhexidine EP Impurity O (CAS 2508008-02-2)
- Chlorhexidine Impurity 6 (CAS 62247-48-7)
- Chlorhexidine-d8 Dihydrochloride (CAS 1246816-96-5)
- Chlorhexidine EP Impurity M (CAS 152504-12-6)
- Chlorhexidine Impurity 24 (CAS CATO-C4X-225624)
- Chlorhexidine Impurity 36 (CAS CATO-C4X-225636)
- Chlorhexidine Impurity 18 (CAS CATO-C4X-225618)
- Chlorhexidine Diacetate EP Impurity B (CAS 1308292-89-8)
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