Phenylephrine Impurity 37 CAS 70935-14-7
| CAS No. | 70935-14-7 |
| Molecular Formula | C8H6O3 |
| Molecular Weight | 150.13 g/mol |
| 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 Phenylephrine Impurity 37.
CATO supplies Phenylephrine Impurity 37 (CAS 70935-14-7), a pharmacopoeial impurity reference standard (molecular formula C8H6O3, MW 150.13 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Phenylephrine Impurity 37 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 150.13 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Phenylephrine Impurity 37 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 | C8H6O3 |
| Molecular Weight | 150.13 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
Related Phenylephrine Standards
- Phenylephrine Impurity 88 (CAS CATO-C4X-146788)
- Phenylephrine Impurity 59 (CAS 50700-49-7)
- Phenylephrine Impurity 27 (CAS 495-42-1)
- Phenylephrine Impurity 41 (CAS 51674-33-0)
- Phenylephrine Impurity 79 (CAS CATO-C4X-146779)
- Phenylephrine Impurity 44 (CAS 131341-58-7)
- Phenylephrine Hydrochloride - Impurity A (Freebase) (CAS 5596-07-6)
- Phenylephrine Impurity 73 (CAS CATO-C4X-146773)
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