Famotidine impurity 70 CAS 874285-13-9
| CAS No. | 874285-13-9 |
| Molecular Formula | C6H5NO4 |
| Molecular Weight | 155.11 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Famotidine impurity 70 (C6H5NO4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 155.11 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Famotidine impurity 70 (CAS 874285-13-9) is a certified pharmaceutical impurity reference standard with the molecular formula C6H5NO4 and a molecular weight of 155.11 g/mol.
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 | C6H5NO4 |
| Molecular Weight | 155.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Related Famotidine Standards
- Famotidine impurity 66 (CAS 7259-54-3)
- Famotidine Impurity C21 (CAS 7120-01-6)
- Famotidine Impurity 57 (CAS 95853-46-6)
- Famotidine Impurity 41 (CAS CATO-C4X-139241)
- Famotidine Impurity 81 (CAS CATO-C4X-139281)
- Famotidine Impurity 80 (CAS CATO-C4X-139280)
- Famotidine impurity 68 (CAS 83700-77-0)
- Famotidine impurity 67 (CAS 77345-71-2)
Recommended Standards
- 5-Amino-1-nitroso-1H-pyrazole-4-carboxamide (CAS CATO-C3D-26212)
- Sepiapterin Impurity 21 (CAS 62128-61-4)
- 2-hydroxy-4-amino-5-nitropyridine 4-Amino-5-nitro-2-pyridinol 4-amino-5-nitropyridin-2-ol 99479-77-3 (CAS 99479-77-3)
- Sepiapterin Impurity 6 (CAS 2387-48-6)
- Ixazomib Impurity 38 (CAS CATO-C4X-126738)
- Levocarnitine Impurity N27 (CAS 6790-41-6)
- Revefenacin Impurity 13 (CAS 864760-28-1)
- 4-Chloro-N-(2,5-dimethylphenyl)benzamide (CAS 127292-00-6)
- 4 - Chloro - 6 - methyl - 2 - (trichloromethyl)quinoline 4-Chloro-6-methyl-2-trichloromethyl-quinoline 93600-19-2 quinoline, 4-chloro-6-methyl-2-(trichloromethyl)- (CAS 93600-19-2)
- Benzyl tert-butyl cyclopent-4-ene-1,3-diyldicarbamate (CAS 1935614-32-6)
- Flumazenil EP Impurity E (CAS 78756-03-3)
- Carbazochrome Impurity 17 (CAS CATO-C4X-229117)
- (4-Fluorophenyl)(cis-hexahydropyrrolo[3,4-b]pyrrol-1(2H)-yl)methanone (CAS 1218603-15-6)
- Semaglutide impurity 65 (CAS CATO-C4X-222665)
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