Phloroglucinol Impurity 32 CAS 83-30-7
| CAS No. | 83-30-7 |
| Molecular Formula | C7H6O5 |
| Molecular Weight | 170.12 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Phloroglucinol Impurity 32 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 170.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
Phloroglucinol Impurity 32 (CAS 83-30-7) is a certified pharmaceutical impurity reference standard with the molecular formula C7H6O5 and a molecular weight of 170.12 g/mol.
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), Phloroglucinol Impurity 32 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 | C7H6O5 |
| Molecular Weight | 170.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Phloroglucinol Standards
- Phloroglucinol Impurity 31 (CAS 1664-27-3)
- Phloroglucinol Impurity 22 (CAS 106-40-1)
- Phloroglucinol Impurity 36 (CAS 530-55-2)
- Phloroglucinol Impurity 14 (CAS 7051-16-3)
- Phloroglucinol Impurity 15 (CAS 95-56-7)
- Phloroglucinol EP Impurity I (CAS 87-65-0)
- Phloroglucinol Dihydrate EP Impurity L (CAS 626-43-7)
- Phloroglucinol EP Impurity O (CAS 137-19-9)
Recommended Standards
- Famotidine impurity 67 (CAS 77345-71-2)
- Gallic Acid (CAS 149-91-7)
- 2-Carboxy-5-methylpyrazine 1,4-dioxide (CAS 2734844-49-4)
- 2,3,4-Trihydroxybenzoic Acid (CAS 610-02-6)
- Ceritinib Impurity 77 (CAS CATO-C4X-104877)
- Lifitegrast Impurity 118 (CAS CATO-C4X-2409118)
- Palbociclib Impurity 208 (CAS 120613-50-5)
- 5-(2-methylpropyl)-1H-pyrrole-2-carboxylic acid (CAS 1374407-85-8)
- N-(2-bromophenyl)-2-((1-methyl-1H-imidazol-2-yl)thio)acetamide (CAS 457078-71-6)
- 2,4-Diaminotoluene (CAS 95-80-7)
- 4-(2-(3-Hydroxypiperidin-1-yl)ethoxy)benzonitrile (CAS 1306736-99-1)
- 1-Chloro-4-[(2-phenoxyethyl)sulfanyl]benzene (CAS 338792-26-0)
- N-(2-hydrazinyl-2-oxoethyl)-3,4,5-trimethoxybenzamide (CAS 63203-45-2)
- [14-31]-Semaglutide (CAS CATO-C4X-2226262)
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