4,4'-(E)-Diazene-1,2-diyldibenzoic acid CAS 71987-42-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 71987-42-3 |
| Molecular Formula | C14H10N2O4 |
| Molecular Weight | 270.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,4'-(E)-Diazene-1,2-diyldibenzoic acid (CAS 71987-42-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C14H10N2O4. Molecular weight: 270.24 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C14H10N2O4 |
| Molecular Weight | 270.24 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 2 |
Related E Standards
- (E)-3,3'-(Diazene-1,2-diyl)dibenzoic acid (CAS 249283-74-7)
- 2,2'-(Diazene-1,2-diyl)dibenzoic acid (CAS 635-54-1)
- (E)-(Diazene-1,2-diylbis(4,1-phenylene))diboronic acid (CAS 1902168-17-5)
- (E)-6,6'-(Diazene-1,2-diyl)dipicolinicacid (CAS 85322-81-2)
- (E)-4,4'-(Diazene-1,2-diyl)bis(4-cyanopentanoic acid) (CAS 1041193-98-9)
- (E)-Diazene-1,2-diylbis(piperidin-1-ylmethanone) (CAS 871024-86-1)
- 2,2'-(Diazene-1,2-diyl)bis(5-hydroxy-2-methylpentanenitrile) (CAS 4693-47-4)
- (E)-(Diazene-1,2-diylbis(4,1-phenylene))dimethanol (CAS 120837-75-4)
Recommended Standards
- 4-((6-Oxo-3H-purin-9(6H)-yl)methyl)benzoic acid (CAS 34397-05-2)
- 4,4'-(Propane-1,3-diylbis(azanediyl))bis(4-oxobut-2-enoic acid) (CAS 6331-21-1)
- 3-Methoxy-4-(1H-purin-8-yl)benzoic acid (CAS 89469-09-0)
- 4-Fluoro-3-(N-(2-methoxyphenyl)sulfamoyl)benzoic acid (CAS 329269-49-0)
- 8-(Chloromethyl)-5-fluoroquinoline (CAS 1342349-11-4)
- B-(9,9-Diphenyl-9H-fluoren-2-yl)-boronic Acid (CAS 400607-31-0)
- KT 5823 (CAS 126643-37-6)
- 4-Bromo-3-(propylsulfonyl)benzenesulfonyl chloride (CAS 1354953-29-9)
- Methyl 4-hydroxy-2,5-dihydrofuran-3-carboxylate (CAS 1040396-68-6)
- Semaglutide impurity 29 (CAS 1188328-22-4)
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