3-chloro-2-isopropyl-5-methyl-pyrazine CAS 116513-20-3
| CAS No. | 116513-20-3 |
| Molecular Formula | C8H17ClN2 |
| Molecular Weight | 176.69 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-chloro-2-isopropyl-5-methyl-pyrazine (CAS 116513-20-3), molecular formula C8H17ClN2 and molecular weight 176.69 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to chlorine substitution, 3-chloro-2-isopropyl-5-methyl-pyrazine is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 176.69 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C8H17ClN2 |
| Molecular Weight | 176.69 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related chloro Standards
- 1-Chloro-3-(4-methylpiperazin-1-yl)propane (CAS 104-16-5)
- 3-chloro-2,5-diethylpyrazine (CAS 67714-53-8)
- 4-Chloro-1,3-benzenedithiol (CAS 58593-78-5)
- (3-Chloro-2-methylpropoxy)cyclopentane (CAS 1339705-08-6)
- 2-(4-Chloro-3-methylbutyl)tetrahydrofuran (CAS 1343183-36-7)
- 3-Butyl-5-chloro-1,2,4-thiadiazole (CAS 1221341-15-6)
- 2-Chloro-4-methyl-1-(methylthio)-1,6-dihydropyrimidine (CAS 1823877-06-0)
- 2-(5-Chloro-4-methylthiazol-2-yl)ethanamine (CAS 915924-00-4)
Recommended Standards
- 5-(chloromethyl)-N,N-dimethylpyridin-2-amine (CAS 1248994-14-0)
- 0V0DUM0390 764-85-2 Nonanoyl chloride EINECS 212-131-2 Nonanoic acid chloride NSC 9829 Pelargonoyl chloride UNII-0V0DUM0390 (CAS 764-85-2)
- 1-(2-Chloroethyl)-4-ethylpiperazine (CAS 61272-37-5)
- 3,5,5-Trimethylhexanoyl Chloride (CAS 36727-29-4)
- Benzyl pyrazin-2-ylcarbamate (CAS 1779124-78-5)
- Ethyl 4-bromo-2-fluoro-3-methylbenzoate (CAS 1394003-97-4)
- Carfentanil Precursor Sodium Salt (CAS 98598-82-4)
- 6-Iodo-3-methylquinolin-4-amine (CAS 1146298-65-8)
- 4-Chloro-5-(((4-chlorophenyl)thio)methyl)isoxazol-3(2H)-one (CAS 89661-12-1)
- 4-(Difluoromethyl)-3-iodo-5-methoxy-2-(trifluoromethyl)pyridine (CAS 1805612-55-8)
- N1,N1'-(Disulfanediylbis(ethane-2,1-diyl))bis(pentane-1,5-diamine) (CAS 33986-11-7)
- 2-(3,4-Dimethoxybenzylidene)benzo[4,5]imidazo[2,1-b]thiazol-3(2H)-one (CAS 290835-37-9)
- Erlotinib Impurity 115 (CAS 52670-38-9)
- Semaglutide Impurity 124 (CAS CATO-C4X-2226124)
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