Chlorhexidine Dihydrochloride - Impurity E CAS 61705-88-2
| CAS No. | 61705-88-2 |
| Molecular Formula | 2*C7H8ClN3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Chlorhexidine Dihydrochloride - Impurity E (CAS 61705-88-2), molecular formula C7H8ClN3CH2O3 and molecular weight 231.64 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H8ClN3CH2O3, Chlorhexidine Dihydrochloride - Impurity E contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 231.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Dihydrochloride - Impurity E 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 | 2*C7H8ClN3 CH2O3 |
| Molecular Weight | 231.64 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chlorhexidine Standards
- Chlorhexidine-d8 Dihydrochloride (CAS 1246816-96-5)
- Chlorhexidine Diacetate EP Impurity B (CAS 1308292-89-8)
- Chlorhexidine EP Impurity K HCI (CAS 1381962-77-1（free base）)
- Chlorhexidine EP Impurity A (CAS 152504-08-0)
- Chlorhexidine EP Impurity A Hydrochloride (CAS 152504-08-0（free base）)
- Chlorhexidine Digluconate EP Impurity G HCl (CAS 152504-09-1 (free base))
- Chlorhexidine EP Impurity N (CAS 152504-10-4)
- Chlorhexidine Diacetate Impurity 2 Hydrochloride (CAS 152504-10-4(Free Base))
Recommended Standards
- Ethyl (E)-3-(4-isopropylphenyl)acrylate (CAS 128408-02-6)
- 2,5-Dimethyl-3-(3-pyrrolinomethyl) benzophenone (CAS 898790-19-7)
- C16 Ceramide-d7 (d18:1-d7/16:0) (CAS 1840942-13-3)
- Methyl 5-amino-2,3-dihydro-1H-indene-1-carboxylate (CAS 754153-28-1)
- 2,4-Dimethylpyrimidine-5-carbonitrile (CAS 4450-24-2)
- 4-(3-Methyl-4-nitrophenoxy)piperidine (CAS 793636-66-5)
- 3-(2,5-Difluorophenyl)azetidine Hydrochloride (CAS 1203684-88-1)
- 4-(n-Butylamino-2,2,3,3,4,4,4-d7)benzoic Acid (CAS 1219803-44-7)
- Methyl 6-bromo-3-chlorobenzo[b]thiophene-2-carboxylate (CAS 438194-62-8)
- Semaglutide impurity 80 (CAS CATO-C4X-222680)
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