tert-Butyl2-(4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate CAS 1773507-35-9
| CAS No. | 1773507-35-9 |
| Molecular Formula | C17H20FN3O2 |
| Molecular Weight | 317.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, tert-Butyl2-(4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate (C17H20FN3O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 317.36 g/mol, it falls into the moderately-high-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.
tert-Butyl2-(4-fluorophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazine-5(4H)-carboxylate (CAS 1773507-35-9), molecular formula C17H20FN3O2 and molecular weight 317.36 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C17H20FN3O2 |
| Molecular Weight | 317.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Recommended Standards
- (E)-3-(2-Cyclopropyl-4-(4-fluorophenyl)quinolin-3-yl)acrylaldehyde (CAS 148901-68-2)
- tert-Butyl 2-(3-fluorophenyl)-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine-5-carboxylate (CAS 1773507-41-7)
- N-(2-(Diphenylphosphino)benzylidene)ethanamine (CAS 145533-43-3)
- 6-Ethyl-7-methyl-6H-dibenzo[c,e][1,2]thiazine-9-carboxylic acid 5,5-dioxide (CAS 1858250-09-5)
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