Pralidoxime Chloride Impurity 4 CAS 3784-97-2
| CAS No. | 3784-97-2 |
| Molecular Formula | I |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| 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 Pralidoxime Chloride Impurity 4.
CATO supplies Pralidoxime Chloride Impurity 4 (CAS 3784-97-2), a pharmacopoeial impurity reference standard (molecular formula IC7H8NO, MW 249.05 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Pralidoxime Chloride Impurity 4 (IC7H8NO) contains an amide group, a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 249.05 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Pralidoxime Chloride Impurity 4 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 | I C7H8NO |
| Molecular Weight | 249.05 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 1 |
Related Pralidoxime Standards
- Pralidoxime Methyl Sulphate (CAS 1200-55-1)
- (Z)-Pralidoxime Chloride (CAS 13698-37-8)
- (E)-Pralidoxime Chloride (CAS 14018-50-9)
- Pralidoxime Chloride Impurity 11 (CAS 21032-31-5)
- Pralidoxime Chloride Impurity 5 (CAS 3313-51-7)
- Pralidoxime Chloride Impurity 1 (CAS 3697-38-9)
- Pralidoxime Chloride Impurity 6 (CAS 3785-03-3)
- Pralidoxime Chloride Impurity 10 (CAS 45750-74-1)
Recommended Standards
- Upadacitinib Impurity 176 (CAS CATO-C4X-2405176)
- Sulfasalazine EP Impurity G (CAS 1391062-37-5)
- Ziprasidone EP Impurity D HCl (CAS 1303996-68-0（free base）)
- 4-(Azepan-1-ylmethyl)benzaldehyde (CAS 943115-82-0)
- 1-[4-(propan-2-yl)phenyl]propan-1-amine (CAS 832741-12-5)
- 4-Methoxy-1-(pyrrolidin-3-yl)-1H-pyrazole (CAS 1850217-39-8)
- 2-(3,5-Dichlorophenyl)-2-(methylamino)acetic acid hydrochloride (CAS 1423023-99-7)
- Citreoviridin (CAS 25425-12-1)
- 4-Amino-2-(cyclopropylmethoxy)benzamide (CAS 1343847-18-6)
- Peptide 432 (CAS CATO-CPTD788432)
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