Chlorhexidine Dihydrochloride CAS 3697-42-5
| CAS No. | 3697-42-5 |
| Molecular Formula | C22H30Cl2N10 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Chlorhexidine Dihydrochloride.
Chlorhexidine Dihydrochloride (CAS 3697-42-5) is a high-purity analytical reference standard with the molecular formula C22H30Cl2N10HCl and a molecular weight of 541.91 g/mol.
Based on its molecular formula C22H30Cl2N10HCl, Chlorhexidine Dihydrochloride contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 541.91 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Chlorhexidine Dihydrochloride 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 2*HCl |
| Molecular Weight | 541.91 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 10 |
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
- 3-(4-Aminophenyl)-4H-chromen-4-one (CAS 297163-64-5)
- 4,6-Bis(trichloromethyl)-1,3,5-triazinan-2-ol compound with triethylamine (1:1) (CAS 1823254-01-8)
- 3-(3-(Trifluoromethyl)phenyl)azetidin-3-ol (CAS 1388072-38-5)
- 3-(Phenylthio)propanoyl chloride (CAS 51849-21-9)
- (1S)-1-(4-fluorophenyl)prop-2-enylamine (CAS 688362-62-1)
- 2-Amino-3-(4-ethylphenyl)-3-hydroxypropanoic acid (CAS 1503457-20-2)
- 1,1-Cyclopropanedicarboxylic acid (CAS 598-10-7)
- tert-butyl (3S)-3-prop-1-ynylpiperazine-1-carboxylate (CAS 1589535-27-2)
- Disodium N-octadecyl sulfosuccinamate (CAS 14481-60-8)
- T-Peptide (CAS 2022956-62-1)
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