2-(Quinuclidin-3-ylidene)acetic acid hydrochloride CAS 75208-44-5
| CAS No. | 75208-44-5 |
| Molecular Formula | C9H13NO2 |
| Molecular Weight | N/A |
| 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.
2-(Quinuclidin-3-ylidene)acetic acid hydrochloride (CAS 75208-44-5), molecular formula C9H13NO2HCl and molecular weight 203.67 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-(Quinuclidin-3-ylidene)acetic acid hydrochloride (C9H13NO2HCl) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 203.67 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.
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 | C9H13NO2 HCl |
| Molecular Weight | 203.67 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Quinuclidin Standards
- Quinuclidin-3-yl 2-cyclopentyl-2-hydroxyhex-3-ynoate (CAS 101952-37-8)
- 1-(Quinuclidin-2-yl)ethanone (CAS 106824-75-3)
- 3-Methyl-5-(quinuclidin-3-yl)-1,2,4-oxadiazole (CAS 114724-64-0)
- (S)-Quinuclidin-3-amine (dihydrochloride) (CAS 119904-90-4)
- Phenyl(quinuclidin-3-yl)methanone hydrochloride (CAS 1216872-91-1)
- (R)-Quinuclidin-3-amine (CAS 123536-15-2)
- Quinuclidin-3-yl Methanesulfonate (CAS 127424-06-0)
- 2-(Quinuclidin-3-yl)-2,3,3a,4,5,6-hexahydro-1h-benzo[de]isoquinolin-1-one hydrochloride (CAS 135729-74-7)
Recommended Standards
- 3-Mercapto-N,N-dimethylbenzamide (CAS 801315-71-9)
- 1049752-52-4 N-[(1-Methyl-1H-pyrazol-4-yl)methyl]cyclohexanamine dihydrochloride MFCD09431458 (CAS 1049752-52-4)
- TERT-BUTYL 7-(1-HYDROXY-2-METHYLPROPAN-2-YL)-3,4-DIHYDRO-1,8-NAPHTHYRIDINE-1(2H)-CARBOXYLATE (CAS 959992-16-6)
- 3-Chloropropylphosphonic acid (CAS 13317-09-4)
- 1-ethyl-1-(2-{[hydroxy(diphenyl)acetyl]oxy}ethyl)piperidinium bromide 23766-28-1 AR-1C2856 (CAS 23766-28-1)
- Tetradecane Related Compound 1 (CAS 96446-43-4)
- 2-((N-(5-(Benzyloxy)-2,4-dichlorophenyl)-4-methylphenyl)sulfonamido)-N,N-dimethylacetamide (CAS 338967-32-1)
- 1,1,2,2,3,3,4,5-Octafluorocyclopentane (CAS 828-35-3)
- N-(4-cyano-2-nitrophenyl)glycine (CAS 19005-68-6)
- Tau Peptide (306-317) trifluoroacetate salt (CAS 1003007-59-7)
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