Calcium Levofolinate EP Impurity H CAS 73951-54-9
| CAS No. | 73951-54-9 |
| Molecular Formula | C20H21N7O7 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Calcium Levofolinate EP Impurity H (CAS 73951-54-9) is a certified pharmaceutical impurity reference standard with the molecular formula C20H21N7O7Ca and a molecular weight of 511.51 g/mol.
Based on its molecular formula C20H21N7O7Ca, Calcium Levofolinate EP Impurity H contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 511.51 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures Calcium Levofolinate EP Impurity H 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 | C20H21N7O7 Ca |
| Molecular Weight | 511.51 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Nitrogen Atoms | 7 |
Related Calcium Standards
- Calcium Levofolinate EP Impurity I Calcium salt (CAS 1148151-21-6)
- Calcium Levofolinate Pentahydrate - Impurity G (Dihydrate Salt) (CAS 207226-40-2)
- Calcium Levofolinate EP Impurity F(Calcium salt) (CAS 28459-40-7(free base))
- Calcium Levofolinate EP Impurity I (CAS 31690-11-6)
- Levofolinate Impurity 8 (CAS 4299-32-5)
- Levofolinate EP Impurity H Calcium salt (CAS 73951-54-9（Free base）)
- Calcium levofolinate (CAS 80433-71-2)
- Calcium Levofolinate EP Impurity E Calcium salt (CAS 944737-05-7（free base）)
Recommended Standards
- Biapenem impurity 12 (CAS CATO-C4X-227312)
- Tetrabenazine Impurity 23-D3 (CAS CATO-C4X-274823)
- Dexamethasone Impurity 98 (CAS CATO-C4X-116598)
- 7-methyl-1-[(7-methyloctyl)oxy]octane (CAS 1461705-92-9)
- 1-Benzyl-2-oxo-1,2,3,4-tetrahydroquinoline-6-carboxylic acid (CAS 88371-27-1)
- (4-Ethylphenyl)(6-methylpyridin-3-yl)methanone (CAS 1187168-13-3)
- 4-(3-Methoxypropoxy)phenylboronic Acid (CAS 279262-35-0)
- 3-Oxo-2H,3H,5H,6H,7H-cyclopenta[c]pyridazine-4-carboxylic acid (CAS 1512619-10-1)
- Bortezomib Impurity 33 (CAS 73058-37-4)
- Tirzepatide Impurity 35 (CAS CATO-C4X-324035)
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