Minocycline EP Impurity I CAS 5874-95-3
| CAS No. | 5874-95-3 |
| Molecular Formula | C21H23N3O7 |
| Molecular Weight | 429.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Minocycline EP Impurity I (CAS 5874-95-3) is a certified pharmaceutical impurity reference standard with the molecular formula C21H23N3O7 and a molecular weight of 429.42 g/mol.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Minocycline EP Impurity I is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 429.42 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).
CATO manufactures Minocycline EP Impurity I under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H23N3O7 |
| Molecular Weight | 429.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >90% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
Related Minocycline Standards
- Minocycline EP Impurity D (CAS 5679-00-5)
- Minocycline Impurity 68 (CAS CATO-C4X-169968)
- Minocycline Impurity 29 (CAS CATO-C4X-169929)
- Minocycline Impurity 69 (CAS CATO-C4X-169969)
- Minocycline Impurity 61 (CAS CATO-C4X-169961)
- Minocycline impurity 55 (CAS CATO-C4X-169955)
- Minocycline Impurity 58 (CAS CATO-C4X-169958)
- Minocycline Impurity 60 (CAS CATO-C4X-169960)
Recommended Standards
- Amicycline hydrochloride, >88% (HPLC) (CAS 4199-34-2)
- 2-(4-Methoxyphenyl)-5-phenyl-1,3,4-oxadiazole (CAS 842-79-5)
- 4-Dimethyl Minocycline (CAS 885112-29-8)
- 1,1'-Iminodianthraquinone [for Determination of Boron] (CAS 82-22-4)
- Escitalopram Impurity 60 (CAS 1219803-58-3)
- Cyproheptadine EP Impurity C Hydrochloride (CAS 4046-24-6)
- Estradiol Impurity 37 (CAS 187024-20-0)
- (Bromoethynyl)trimethylsilane (CAS 18243-59-9)
- Methyl 6-bromo-5-hydroxynicotinate (CAS 1256837-01-0)
- Ac-(6-O-stearoyl)-muramyl-Ala-D-Glu-NH2 (CAS 60398-08-5)
- Potassium 3-ethyl-1,2,4-oxadiazole-5-carboxylate (CAS 1993194-60-7)
- Methyl 1-(4-formylphenyl)-1H-pyrazole-3-carboxylate (CAS 2108305-59-3)
- 2-(3-(Trifluoromethyl)phenyl)pyrrolidine hydrochloride (CAS 1197237-16-3)
- D-Ile27-Tirzepatide (CAS CATO-CPTD788907)
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