Metformin EP Impurity E 3/2 Sulfate CAS CATO-C4X-122031
| CAS No. | CATO-C4X-122031 |
| Molecular Formula | C3H9N5 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Metformin EP Impurity E 3/2 Sulfate (CAS CATO-C4X-122031) is a certified pharmaceutical impurity reference standard with the molecular formula C3H9N53/H2O4S and a molecular weight of 885.55 g/mol.
Based on its molecular formula C3H9N53/H2O4S, Metformin EP Impurity E 3/2 Sulfate contains an amide group, a sulfone group, a carboxylic acid group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 885.55 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C3H9N5 3/2*H2O4S |
| Molecular Weight | 213.21 g/mol |
| Purity | 97%+ |
| 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 | 5 |
| Sulfur Atoms | 1 |
Related Metformin Standards
- Metformin EP Impurity D (CAS 108-78-1)
- Metformin Hydrochloride (CAS 1115-70-4)
- Metformin-d6 Hydrochloride (CAS 1185166-01-1)
- Metformin Impurity 38 (CAS 118632-64-7)
- Metformin EP impurity F Tetrahydrofuran Solution (CAS 124-40-3 (free base))
- Metformin Impurity 532 (CAS 141-83-3)
- Metformin Impurity N74 (CAS 1609-00-3)
- Metformin EP Impurity E HCl (CAS 1674-62-0)
Recommended Standards
- Siponimod impurity 32 (CAS CATO-C4X-247232)
- Lercanidipine Impurity 40 (CAS CATO-C4X-136440)
- Dapoxetine Impurity 61 (CAS CATO-C4X-143961)
- 2-Iodo-4'-methyl-1,1'-biphenyl (CAS 14385-93-4)
- (2E)-1-(3,4-Dichlorophenyl)-3-(3,4-dimethoxyphenyl)prop-2-en-1-one (CAS 200710-49-2)
- Iron(III) Ferrocyanide (CAS 14038-43-8)
- 5-Methoxy-1-(o-tolyl)-1H-pyrazole-3-carboxylic acid (CAS 1344701-73-0)
- 4-Nitrophenyl 3-O-benzoyl-4-6-cyclohexylidene-β-D-mannopyranoside (CAS 102717-17-9)
- BM-PEG3 (CAS 86099-06-1)
- Peptide 433 (CAS CATO-CPTD788433)
Why CATO?
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