Calcium Levofolinate EP Impurity B CAS CATO-C4X-13353
| CAS No. | CATO-C4X-13353 |
| Molecular Formula | C21H23N7O8 |
| Molecular Weight | 501.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Calcium Levofolinate EP Impurity B (CAS CATO-C4X-13353) is a certified pharmaceutical impurity reference standard with the molecular formula C21H23N7O8 and a molecular weight of 501.45 g/mol.
Structurally, Calcium Levofolinate EP Impurity B (C21H23N7O8) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 501.45 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
CATO manufactures Calcium Levofolinate EP Impurity B 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 | C21H23N7O8 |
| Molecular Weight | 501.45 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 7 |
Related Calcium Standards
- Levofolinate Impurity 16 (CAS CATO-C4X-133516)
- Levofolinate Impurity 17 (CAS CATO-C4X-133517)
- Levofolinate Impurity 20 (CAS CATO-C4X-133520)
- Levofolinate Impurity 21 (CAS CATO-C4X-133521)
- Levofolinate Impurity 18 (CAS CATO-C4X-133518)
- Calcium Levofolinate EP Impurity I (CAS 31690-11-6)
- Levofolinate Impurity 8 (CAS 4299-32-5)
- Calcium Levofolinate Pentahydrate - Impurity G (Dihydrate Salt) (CAS 207226-40-2)
Recommended Standards
- 3-(4-Chlorophenyl)-2-((2-(4-chlorophenyl)-2-oxoethyl)thio)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one (CAS 573930-44-6)
- Regadenoson Impurity 42 (CAS CATO-C4X-198542)
- 3-(4-Chlorophenyl)-2-((2-(2-chlorophenyl)-2-oxoethyl)thio)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one (CAS 573940-83-7)
- Calcium Folinate EP Impurity B (Mixture of Diastereomers) (CAS 98814-60-9)
- Escitalopram EP impurity E D-PTTA (CAS CATO-C4X-110988)
- Nicergoline EP Impurity G (CAS 57935-65-6)
- Dobutamine Impurity 8 (CAS 14165-67-4)
- 5-Amino-2-(pyrazin-2-yl)oxazole-4-carbonitrile (CAS 907962-52-1)
- 2-(2-Methylpyridin-4-yl)propan-2-amine (CAS 566158-79-0)
- Rifamdin (CAS 89499-17-2)
- 4,5,6,7-Tetrabromo-3,3-bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one (CAS 13027-28-6)
- (2Z)-3-(2H-1,3-Benzodioxol-5-yl)-2-cyano-N,N-diethylprop-2-enamide (CAS 59832-20-1)
- 3-(4-Methoxyphenyl)-5-(piperidin-4-yl)-1,2,4-oxadiazole (CAS 276237-02-6)
- Insulin Degludec Impurity 2 (CAS CATO-C4X-21572)
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