(E)-(Diazene-1,2-diylbis(4,1-phenylene))diboronic acid CAS 1902168-17-5
| CAS No. | 1902168-17-5 |
| Molecular Formula | C12H12B2N2O4 |
| Molecular Weight | 269.86 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
(E)-(Diazene-1,2-diylbis(4,1-phenylene))diboronic acid (CAS 1902168-17-5) is a high-purity analytical reference standard with the molecular formula C12H12B2N2O4 and a molecular weight of 269.86 g/mol.
The molecular framework of (E)-(Diazene-1,2-diylbis(4,1-phenylene))diboronic acid (C12H12B2N2O4) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C12H12B2N2O4 |
| Molecular Weight | 269.86 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 2 |
Related E Standards
- (E)-3,3'-(Diazene-1,2-diyl)dibenzoic acid (CAS 249283-74-7)
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- 4,4'-(E)-Diazene-1,2-diyldibenzoic acid (CAS 71987-42-3)
- (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)
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