2-Methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine hydrochloride CAS 2138549-08-1
| CAS No. | 2138549-08-1 |
| Molecular Formula | C7H11N3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 173.64 g/mol gives 2-Methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine hydrochloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 2-Methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine hydrochloride (CAS 2138549-08-1), a certified reference material (molecular formula C7H11N3HCl, MW 173.64 g/mol) for analytical method development and quality control.
2-Methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine hydrochloride (C7H11N3HCl) contains a nitrile group, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C7H11N3 HCl |
| Molecular Weight | 173.64 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Methyl Standards
- Ethyl 4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-2-carboxylate (CAS 1029720-98-6)
- 4-Oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-2-carboxylic acid (CAS 1029721-02-5)
- Ethyl 4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-3-carboxylate (CAS 1060814-45-0)
- 1,2,3,9-Tetrahydropyrazolo[1,2-a]indazole (CAS 106662-04-8)
- Ethyl 4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine-3-carboxylate (CAS 115931-38-9)
- 4,5,6,7-Tetrahydropyrazolo[1,5-a]pyrimidine-3-carbonitrile (CAS 115931-97-0)
- 4,5,6,7-Tetrahydropyrazolo[1,5-a]pyrimidine hydrochloride (CAS 1159599-92-4)
- Ethyl 4,5,6,7-tetrahydropyrazolo[1,5-a]pyridine-3-carboxylate (CAS 118055-06-4)
Recommended Standards
- 2-(Pyrrolidin-1-ylmethyl)benzaldehyde (CAS 625079-74-5)
- (2R,3R)-3-Amino-2-methylbutanoic acid (CAS 139344-67-5)
- Methyl 2-((5-hydroxy-2,2-dimethyl-4-oxochroman-7-yl)oxy)acetate (CAS 956950-84-8)
- 2-([1,1'-Biphenyl]-4-yl)-5,5-dimethyl-1,3,2-dioxaborinane (CAS 5123-05-7)
- Di(tert-butyl) 2,3-diazabicyclo[2.2.1]hept-5-ene-2,3-dicarboxylate (CAS 39203-22-0)
- (R)-1,3-Dibenzylpiperazine (CAS 169458-69-9)
- [1-(4-methoxyphenyl)-2,5-dimethyl-1H-pyrrol-3-yl]acetonitrile (CAS 42780-46-1)
- NSC 66811 (CAS 6964-62-1)
- N-ethyl-2-(2-fluorophenoxy)ethan-1-amine (CAS 915920-96-6)
- Semaglutide impurity 55 (CAS CATO-C4X-222655)
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