3-Amino-5-chloropyrazine-2-carboxamide CAS 1823889-69-5
| CAS No. | 1823889-69-5 |
| Molecular Formula | C5H5ClN4O |
| Molecular Weight | 172.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-Amino-5-chloropyrazine-2-carboxamide (CAS 1823889-69-5) is a high-purity analytical reference standard with the molecular formula C5H5ClN4O and a molecular weight of 172.57 g/mol.
Based on its molecular formula C5H5ClN4O, 3-Amino-5-chloropyrazine-2-carboxamide contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 172.57 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C5H5ClN4O |
| Molecular Weight | 172.57 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) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
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Recommended Standards
- 6-Chloro-5,7a-dihydro-1H-pyrazolo[3,4-d]pyrimidin-4(3aH)-one (CAS 1823870-37-6)
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- 4-Chloro-2-methyl-6-nitropyridine (CAS 1805466-97-0)
- 2,4-Diamino-6-chloropyrimidine-5-carbaldehyde (CAS 18740-20-0)
- 4-Fluorooctahydrocyclopenta[c]pyrrole (CAS 1423117-37-6)
- 4-Hydroxy-3-[3-(4-hydroxyphenyl)acryloyl]-6-methyl-2H-pyran-2-one (CAS 14006-18-9)
- (2-(Difluoromethyl)-4,5-difluoropyridin-3-yl)methanol (CAS 1805326-31-1)
- 4-(2,3-Difluorobenzyl)piperidine (CAS 253450-32-7)
- 6-Chloro-1,1-difluorospiro[2.5]Oct-5-ene-5-carbaldehyde (CAS 1513853-82-1)
- 1-Boc-1,4,5,6-tetrahydropyridine-2-boronic Acid Pinacol Ester (CAS 865245-32-5)
- (3-(2,2,2-Trifluoroethyl)phenyl)boronic acid (CAS 1620056-82-7)
- N-[(1Z)-(Dimethylamino)methylidene]-1-(pyrimidin-2-yl)piperidine-4-carboxamide (CAS 338780-46-4)
- 2-Isopropyl-1H-pyrazolo[1,5-b][1,2,4]triazole (CAS 197355-52-5)
- Semaglutide impurity 95 (CAS CATO-C4X-222695)
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