N1,N4-bis(4-aminophenyl)terephthalamide CAS 34066-75-6
| CAS No. | 34066-75-6 |
| Molecular Formula | C20H18N4O2 |
| Molecular Weight | 346.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 346.38 g/mol gives N1,N4-bis(4-aminophenyl)terephthalamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
N1,N4-bis(4-aminophenyl)terephthalamide (CAS 34066-75-6), molecular formula C20H18N4O2 and molecular weight 346.38 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, N1,N4-bis(4-aminophenyl)terephthalamide (C20H18N4O2) contains a steroid 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 346.38 g/mol, it falls into the moderately-high-molecular-weight range. 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 analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C20H18N4O2 |
| Molecular Weight | 346.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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.) | 1966 |
| Nitrogen Atoms | 4 |
Recommended Standards
- N1,N3-bis(pyridin-2-ylmethyl)isophthalamide (CAS 321531-61-7)
- Pentyl 4-(benzo[d][1,3]dioxol-5-yl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 300667-76-9)
- N-[(4-Methoxyphenyl)methyl]-3-(1H-pyrrol-1-yl)-1-benzofuran-2-carboxamide (CAS 865658-56-6)
- Phenolphthaleine dimethyl ether (CAS 6315-80-6)
- NVP-AUY 922 (CAS 747412-49-3)
- 1-(4-Bromo-2-fluorophenyl)-1H-pyrrole (CAS 383137-68-6)
- (R)-2-(1-Amino-7-bromo-1,2,3,4-tetrahydronaphthalen-1-yl)-2,2-difluoroethanol (CAS 1415108-40-5)
- 2-Chloro-5-(3-chlorophenyl)-1-pentene (CAS 1143461-26-0)
- 8-Chloro-2-(2-chlorophenyl)quinoline-4-carboxylic acid (CAS 724759-52-8)
- 4-(4-Chlorophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarbonitrile (CAS 67438-99-7)
- 3-(4-Methoxyphenyl)-5-methylisoxazole-4-carboxylic acid (CAS 93041-45-3)
- 2-((5-Amino-1,3,4-thiadiazol-2-yl)thio)-N-(4-(trifluoromethoxy)phenyl)acetamide (CAS 839693-07-1)
- 2-Chloro-5-(pentafluoro-lambda6-sulfanyl)benzoic acid (CAS 1431329-70-2)
- Semaglutide impurity 34 (CAS CATO-C4X-222634)
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