2-Ethyl-5,7-dimethyl-3H-imidazo[4,5-β]pyridine CAS 133240-06-9
| CAS No. | 133240-06-9 |
| Molecular Formula | C10H13N3 |
| Molecular Weight | 175.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-Ethyl-5,7-dimethyl-3H-imidazo[4,5-β]pyridine.
CATO supplies 2-Ethyl-5,7-dimethyl-3H-imidazo[4,5-β]pyridine (CAS 133240-06-9), a certified reference material (molecular formula C10H13N3, MW 175.23 g/mol) for analytical method development and quality control.
Structurally, 2-Ethyl-5,7-dimethyl-3H-imidazo[4,5-β]pyridine (C10H13N3) contains a nitrogen-containing heterocyclic scaffold, a nitrile group. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 175.23 g/mol, it falls into the medium-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.
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.
Physical & Chemical Properties
| Molecular Formula | C10H13N3 |
| Molecular Weight | 175.23 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 |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
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- 5-Methylpyrimidine-2-sulfonamide (CAS 35762-78-8)
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