Pyrazole-3-carbonitrile CAS 36650-74-5
| CAS No. | 36650-74-5 |
| Molecular Formula | C4H3N3 |
| Molecular Weight | 93.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Pyrazole-3-carbonitrile (CAS 36650-74-5), molecular formula C4H3N3 and molecular weight 93.09 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Pyrazole-3-carbonitrile (C4H3N3) is characterized by a nitrile group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C4H3N3 |
| Molecular Weight | 93.09 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1967 |
| Nitrogen Atoms | 3 |
Related Pyrazole Standards
- 1H- Pyrazole- 3- carboxaldehyde (CAS 3920-50-1)
- 1H-Pyrazole-3-carbaldehyde,dimer (CAS 209002-03-9)
- 1H-Pyrazole-5-carbaldehyde (CAS 948552-36-1)
- 1H-Pyrazole-3,4-diamine (CAS 16461-98-6)
- 1H-Pyrazole-1-carboximidamide (CAS 4023-00-1)
- 1H-Pyrazole-1-carboxamide (CAS 931-08-8)
- 1H-Pyrazole-3-carbaldehyde oxime (CAS 30192-58-6)
- Pyrazole-3-carboxamide (CAS 33064-36-7)
Recommended Standards
- 5-ethynyl-1H-1,2,4-triazole (CAS 2138143-45-8)
- rac-Glycerol-1- (CAS 98292-00-3)
- 4-Imidazolecarbonitrile (CAS 57090-88-7)
- Glycerol-2-13C (CAS 82425-96-5)
- 5-(4-Carboxyphenoxy)isophthalic acid (CAS 60893-67-6)
- 1-(Naphthalen-2-yl)-3-phenylurea (CAS 6299-42-9)
- 3-Hydroxy-3'-(pyrrolidin-1-ylsulfonyl)-[1,1'-biphenyl]-4-carbonitrile (CAS 1261918-62-0)
- ThioGlo1 (CAS 137350-66-4)
- 4-[(1,5-dimethyl-1h-pyrazol-4-yl)methoxy]aniline (CAS 1006958-85-5)
- 2-(2,4-Dioxo-8-oxa-1,3-diazaspiro[4.5]Decan-3-yl)-N-(3-fluorophenyl)acetamide (CAS 1281077-71-1)
- Tetradecyl 2-acetamido-2-deoxy-3,4,6-tri-O-acetyl-b-D-glucopyranoside (CAS 173725-25-2)
- 4-Chloro-2-iodo-1-isopropylbenzene (CAS 1369923-80-7)
- 4,4'-Bis((E)-2-(9-ethyl-9H-carbazol-3-yl)vinyl)-1,1'-biphenyl (CAS 475480-90-1)
- Crustacean Cardioactive Peptide (CCAP) (CAS 309247-84-5)
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