Chlorhexidine Impurity 31 CAS CATO-C4X-225631
| CAS No. | CATO-C4X-225631 |
| Molecular Formula | C12H16ClNO6 |
| Molecular Weight | 305.71 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Chlorhexidine Impurity 31 (CAS CATO-C4X-225631) is a certified pharmaceutical impurity reference standard with the molecular formula C12H16ClNO6 and a molecular weight of 305.71 g/mol.
Based on its molecular formula C12H16ClNO6, Chlorhexidine Impurity 31 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 305.71 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
As a certified reference material (CRM), Chlorhexidine Impurity 31 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 | C12H16ClNO6 |
| Molecular Weight | 305.71 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chlorhexidine Standards
- Chlorhexidine Impurity 23 (CAS CATO-C4X-225623)
- Chlorhexidine Impurity 25 (CAS CATO-C4X-225625)
- Chlorhexidine Impurity 32 (CAS CATO-C4X-225632)
- Chlorhexidine Digluconate Solution EP Impurity L (CAS CATO-C4X-225637)
- Chlorhexidine Impurity 5 (CAS 2518301-34-1)
- Chlorhexidine Impurity 22 (CAS CATO-C4X-225622)
- Chlorhexidine EP Impurity N (CAS 152504-10-4)
- Chlorhexidine Diacetate Impurity 4 (CAS 15894-70-9)
Recommended Standards
- Formoterol Impurity 67 (CAS 871266-45-4)
- 2-(2-Chlorophenyl)-1-methyl-5-oxo-1,2,3,5-tetrahydroimidazo[1,2-a]pyrimidine-6-carboxylic acid (CAS 141234-30-2)
- Tert-butyl 2-chloro-5,5-difluoro-5,8-dihydropyrido[3,4-d]pyrimidine-7(6H)-carboxylate (CAS 2306272-38-6)
- 5-Chloro-6-(naphthalen-1-ylamino)pyrazine-2,3-dicarbonitrile (CAS 188710-69-2)
- Amlodipine Impurity 75 (CAS 113994-44-8)
- Picosulfate impurity 18 (CAS 26838-86-8)
- Ganciclovir Impurity 24 (CAS 86761-37-7)
- 5-Cyclopropyl-1-ethyl-3-nitro-1h-pyrazole (CAS 1170367-28-8)
- 3-Cyano-4-(3-chloro-4-fluoroanilino)-7-ethoxy-6-(phthalimidyl)quinoline 915945-40-3 (CAS 915945-40-3)
- Bacteriopheophytin (CAS 17453-58-6)
- (5-Chloro-2-fluorophenyl)(cyclopropyl)methanone (CAS 1368550-33-7)
- (3S,4R)-1-(tert-Butoxycarbonyl)-4-phenylpiperidine-3-carboxylic acid (CAS 652971-20-5)
- 2',3'-Dihydro-1'H-spiro[cyclopropane-1,4'-isoquinoline]-6'-carbonitrile hydrochloride (CAS 1203682-92-1)
- Liraglutide Impurity 14 TFA Salt (CAS CATO-C4X-199214)
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