Iopromide Impurity 21 CAS CATO-C4X-183221
| CAS No. | CATO-C4X-183221 |
| Molecular Formula | C4H10N2O3 |
| Molecular Weight | 134.13 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Iopromide Impurity 21 is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Iopromide Impurity 21 (CAS CATO-C4X-183221) is a certified pharmaceutical impurity reference standard with the molecular formula C4H10N2O3 and a molecular weight of 134.13 g/mol.
Iopromide Impurity 21 (C4H10N2O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C4H10N2O3 |
| Molecular Weight | 134.13 g/mol |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 1.0 |
| Nitrogen Atoms | 2 |
Related Iopromide Standards
- Iopromide Impurity 18 (CAS CATO-C4X-183218)
- Iopromide Impurity 19 (CAS CATO-C4X-183219)
- Iopromide Impurity 20 (CAS CATO-C4X-183220)
- Iopromide Impurity N39 (CAS CATO-C4X-2120139)
- Iopromide Impurity 45 HCl (CAS 132327-79-8)
- Iopromide Impurity 25 HCl (CAS 874302-08-6)
- Iopromide Impurity 22 (CAS 83804-96-0（Free Base）)
- Iopromide Impurity 27 (CAS CATO-C4X-183227)
Recommended Standards
- Methyl ethoxy carbonate (CAS CATO-C4X-2108164)
- Empagliflozin Impurity 82 (CAS 154006-52-7)
- Cladribine Impurity 2 (CAS 533-67-5)
- Capecitabine Impurity 50 (CAS 13039-75-3)
- Neticonazole impurity 11 (CAS 56986-82-4)
- Lysine Impurity 26 (CAS CATO-C4X-221126)
- Febuxostat Impurity 7 (CAS 1330632-46-6)
- 4-Chloro-3’,4’-dimethoxybenzophenone (CAS 116412-83-0)
- 5-[4-(Methylthio)phenyl]-1H-tetrazole (CAS 138689-79-9)
- 2-Azaspiro[3.3]heptan-6-one (CAS 1700611-14-8)
- 4-(2-Benzylphenoxy)-3-fluoroaniline (CAS 946742-38-7)
- 1-(Pyrrolidin-1-yl)propan-1-one (CAS 4553-05-3)
- Tert-butyl 3-(2,4-difluorophenyl)-6,7-dihydroisoxazolo[4,3-c]pyridine-5(4H)-carboxylate (CAS 2328103-08-6)
- Pancreatic Polypeptide (31-36) Free Acid, human (CAS 192432-73-8)
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