3-Methyl-1H-pyrazole-4-carbaldehyde hydrochloride CAS 1257849-73-2
| CAS No. | 1257849-73-2 |
| Molecular Formula | C5H6N2O |
| Molecular Weight | N/A |
| 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 3-Methyl-1H-pyrazole-4-carbaldehyde hydrochloride.
CATO supplies 3-Methyl-1H-pyrazole-4-carbaldehyde hydrochloride (CAS 1257849-73-2), a certified reference material (molecular formula C5H6N2OHCl, MW 146.57 g/mol) for analytical method development and quality control.
Structurally, 3-Methyl-1H-pyrazole-4-carbaldehyde hydrochloride (C5H6N2OHCl) contains an amide 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 146.57 g/mol, it falls into the low-molecular-weight range. 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 | C5H6N2O HCl |
| Molecular Weight | 146.57 g/mol |
| 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.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
- 1-[4-(1H-Tetrazol-1-yl)phenyl]ethanone (CAS 125620-13-5)
- (4-Chloro-2-fluoro-6-methoxyphenyl)methanol (CAS 1823952-59-5)
- 3-Cyclopropyl-4-iodo-2H-pyrazole (CAS 1341758-26-6)
- 5,5-Dimethyl-3-((naphthalen-2-ylmethyl)sulfonyl)-4,5-dihydroisoxazole (CAS 834885-16-4)
- Lurasidone Impurity 13 (CAS CATO-C4X-102813)
- methyl 4-[(phenoxycarbonyl)amino]benzoate (CAS 101097-65-8)
- 7-Chloro-5-methylbenzofuran-3(2H)-one (CAS 3261-10-7)
- {hexahydrospiro[cyclopropane-1,2'-pyrrolizine]-7'a-yl}methanamine (CAS 1788873-90-4)
- 2-(((4-Bromothiophen-2-yl)methyl)(methyl)amino)-N,N-dimethylacetamide (CAS 1247524-58-8)
- Semaglutide Impurity 8 (CAS CATO-C4X-22268)
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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