Phloroglucinol Impurity 37 CAS CATO-C4X-221737
| CAS No. | CATO-C4X-221737 |
| Molecular Formula | C18H14O9 |
| Molecular Weight | 374.30 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 Phloroglucinol Impurity 37.
Phloroglucinol Impurity 37 (CAS CATO-C4X-221737) is a certified pharmaceutical impurity reference standard with the molecular formula C18H14O9 and a molecular weight of 374.30 g/mol.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, Phloroglucinol Impurity 37 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 374.30 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), Phloroglucinol 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 | C18H14O9 |
| Molecular Weight | 374.30 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Phloroglucinol Standards
- Phloroglucinol Impurity 40 (CAS CATO-C4X-221740)
- Phloroglucinol Impurity 41 (CAS 62218-04-6)
- Phloroglucinol impurity 51 (CAS CATO-C4X-221751)
- Phloroglucinol impurity 52 (CAS CATO-C4X-221752)
- Phloroglucinol Impurity 76 (CAS CATO-C4X-221776)
- Phloroglucinol Tribenzyl Ether (CAS 59434-20-7)
- Phloroglucinol Impurity 43 (CAS 72046-73-2)
- Phloroglucinol impurity 60 (CAS CATO-C4X-221760)
Recommended Standards
- Erlotinib impurity 134 (CAS CATO-C4X-1069134)
- Protocetraric acid (CAS 489-51-0)
- Phenol Related Compound 6 (CAS 79005-83-7)
- Phenol Related Compound 3 (CAS 58878-18-5)
- Milrinone Impurity 14 (CAS CATO-C4X-109114)
- Bromfenac Impurity 33 (CAS 1644279-16-2)
- Bosutinib Impurity 36 (CAS CATO-C4X-184736)
- 5-Bromo-2-thioxo-2,3-dihydropyrimidin-4(1H)-one (CAS 113138-12-8)
- Praseodymium(III) oxalate xhydrate (CAS 28877-86-3)
- Danshenxinkun D (CAS 98873-76-8)
- 2-Methylenebutane-1,4-diol (CAS 55881-94-2)
- 1-Methyl-α-4-pyridinyl-1H-benzimidazole-2-methanamine (CAS 13745-30-7)
- (R)-6-Bromo-4-methyl-4,5-dihydro-1H-benzo[b][1,4]diazepin-2(3H)-one (CAS 1884712-55-3)
- Lixisenatide (CAS 320367-13-3（free base）)
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