3-Chlorobenzonitrile CAS 766-84-7
| CAS No. | 766-84-7 |
| Molecular Formula | C7H4ClN |
| Molecular Weight | 137.57 g/mol |
| 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-Chlorobenzonitrile.
3-Chlorobenzonitrile (CAS 766-84-7), molecular formula C7H4ClN and molecular weight 137.57 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3-Chlorobenzonitrile (C7H4ClN) contains a nitrile group, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 137.57 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.
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.
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 | C7H4ClN |
| Molecular Weight | 137.57 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chlorobenzonitrile Standards
- 4-Chlorobenzonitrile (CAS 623-03-0)
- 2-Chlorobenzonitrile (CAS 873-32-5)
- 4-Chlorobenzonitrile-d4 (CAS 1219794-82-7)
- 4-Acetyl-2-chlorobenzonitrile (CAS 101667-74-7)
- 4-acetyl-3-chlorobenzonitrile (CAS 1096666-21-5)
- 3-Acetyl-4-chlorobenzonitrile (CAS 120569-07-5)
- 3-Acetyl-5-chlorobenzonitrile (CAS 1393581-95-7)
- 5-Acetyl-2-chlorobenzonitrile (CAS 68505-13-5)
Recommended Standards
- 3-Chloro-2-ethynylpyridine (CAS 96439-98-4)
- 3-chloro-5-fluoro-pyridine (CAS 514797-99-0)
- 2-Chloro-6-ethynylpyridine (CAS 914950-09-7)
- 4-chloro-3-fluoropyridine (CAS 2546-56-7)
- Methoxycarbonyl-D-Nle-Gly-Arg-pNA acetatesalt (CAS 120599-82-8)
- 2-(Heptyloxy)benzaldehyde (CAS 66049-86-3)
- 1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-5-sulfonamide (CAS 1803602-09-6)
- D-Glucose-1,2-13C2 (CAS 138079-87-5)
- oxolane-3-sulfonamide (CAS 1311316-50-3)
- Oosporein (CAS 475-54-7)
- Ethyl 2-[(1,3-dioxobutyl)amino]-4-phenyl-3-thiophenecarboxylate (CAS 568559-93-3)
- 4-(Methylsulfonyl)-2-morpholinobenzaldehyde (CAS 1197193-22-8)
- 4-(Methylamino)benzoic Acid (CAS 10541-83-0)
- Heptapeptide-6 (CAS CATO-CPTD788823)
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