2-(chloromethyl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole CAS 1909337-19-4
| CAS No. | 1909337-19-4 |
| Molecular Formula | C7H9ClN2 |
| Molecular Weight | 156.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2-(chloromethyl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole (CAS 1909337-19-4), a certified reference material (molecular formula C7H9ClN2, MW 156.61 g/mol) for analytical method development and quality control.
2-(chloromethyl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole (C7H9ClN2) contains a nitrile group, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C7H9ClN2 |
| Molecular Weight | 156.61 g/mol |
| Appearance | Off-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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related chloromethyl Standards
- 3-(Chloromethyl)-2-methylphenol (CAS 1182257-74-4)
- 3-(Chloromethyl)-5-methylpyridin-2-amine (CAS 1227581-55-6)
- 3-(Chloromethyl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole (CAS 1260670-79-8)
- 5-(Chloromethyl)-2,4-dimethylpyrimidine (CAS 1314940-34-5)
- 5-(Chloromethyl)-4-methylpyridin-2-amine (CAS 1355233-09-8)
- (2-(Chloromethyl)phenyl)methanol (CAS 142066-41-9)
- (3-(Chloromethyl)phenyl)methanol (CAS 175464-51-4)
- 1-(Chloromethyl)-2-methoxy-benzene (CAS 7035-02-1)
Recommended Standards
- 2-Chloro-4-ethylphenol (CAS 18980-00-2)
- (4-Chloro-2-methylphenyl)hydrazine (CAS 19690-59-6)
- 4-Chloro-2-ethylphenol (CAS 18979-90-3)
- (1S)-1-(2-Chloro-4-pyridyl)ethanamine (CAS 937399-99-0)
- 2-Hydroxy-2-methyl-3-(4-methylbenzenesulfonyl)-N-[3-(trifluoromethyl)phenyl]propanamide (CAS 338424-47-8)
- 2,4-Diamino-7-(5-methyl-2-furyl)-7,8-dihydroquinazolin-5(6H)-one (CAS 1428139-13-2)
- 5-(5-(((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)amino)methyl)-4,5-dihydroisoxazol-3-yl)-4-methyl-2,4-dihydro-3H-1,2,4-triazole-3-thione (CAS 400082-28-2)
- 3-Chloro-1H-indole-2-carbaldehyde (CAS 110912-15-7)
- (3Z)-1-(4-Chlorophenyl)-3-[(dimethylamino)methylidene]pyrrolidin-2-one (CAS 339020-56-3)
- 2-(1H-indazol-4-yl)acetic acid (CAS 902131-33-3)
- Methyl (r)-3-amino-3-(5-bromothiophen-2-yl)propanoate (CAS 1213495-32-9)
- Ethyl 6-((3-(tert-butoxy)-3-oxopropyl)amino)-2-(pyridin-2-yl)pyrimidine-4-carboxylate (CAS 1373424-18-0)
- 2-Chloro-N-methylpyridine-3-sulfonamide (CAS 38030-51-2)
- Semaglutide impurity 267 (CAS CATO-C4X-2226267)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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