| CAS No. | 90605-88-2 |
| Molecular Formula | C18H20N4 |
| Molecular Weight | 292.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
rel-N,N'-((1R,2S)-Cyclohexane-1,2-diyl)bis(1-(pyridin-2-yl)methanimine) (CAS 90605-88-2) is a high-purity analytical reference standard with the molecular formula C18H20N4 and a molecular weight of 292.38 g/mol.
Structurally, rel-N,N'-((1R,2S)-Cyclohexane-1,2-diyl)bis(1-(pyridin-2-yl)methanimine) (C18H20N4) contains a nitrogen-containing heterocyclic scaffold, a nitrile group. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 292.38 g/mol, it falls into the medium-molecular-weight range. 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).
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.
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.
| Molecular Formula | C18H20N4 |
| Molecular Weight | 292.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 4 |