3,5-Dimethyl-4,4′-bi-1H-pyrazole CAS 2750236-87-2
| CAS No. | 2750236-87-2 |
| Molecular Formula | C8H10N4 |
| Molecular Weight | 162.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, 3,5-Dimethyl-4,4′-bi-1H-pyrazole is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 162.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
3,5-Dimethyl-4,4′-bi-1H-pyrazole (CAS 2750236-87-2), molecular formula C8H10N4 and molecular weight 162.19 g/mol, is a CATO reference standard with documented purity and traceability.
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.
As a certified reference material (CRM), 3,5-Dimethyl-4,4′-bi-1H-pyrazole meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H10N4 |
| Molecular Weight | 162.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Nitrogen Atoms | 4 |
Related Dimethyl Standards
- 1',5'-Dimethyl-1H,1'H-3,4'-bipyrazole (CAS 1006327-22-5)
- 1',3'-Dimethyl-1H,1'H-3,4'-bipyrazole (CAS 1006356-56-4)
- 4,6-Dimethyl-1H-benzo[d]imidazol-2(3H)-one (CAS 102308-68-9)
- 1,6-DImethyl-1h-pyrazolo[3,4-b]pyridin-3-amine (CAS 1082942-26-4)
- 4,5-Dimethyl-1H-pyrrolo[2,3-b]pyridin-2(3H)-one (CAS 1190314-90-9)
- 6,7-Dimethyl-1H-pyrrolo[3,2-b]pyridin-2(3H)-one (CAS 1190320-04-7)
- 5,6-Dimethyl-1H-pyrrolo[2,3-b]pyridin-2(3H)-one (CAS 1190321-66-4)
- 4-Acetyl-1,5-dimethyl-1H-pyrrole-2-carbonitrile (CAS 121191-16-0)
Recommended Standards
- 2-(1H-pyrrolo[3,2-c]pyridin-3-yl)ethan-1-ol (CAS 1002916-37-1)
- (E)-α-Methylcinnamic Acid (CAS 1895-97-2)
- (S,E)-Deca-2,9-diene-4,6-diyne-1,8-diol 931114-98-6 C10H10O2 W1876 (CAS 931114-98-6)
- Edaravone Impurity 25 (CAS 92-43-3)
- 5-Bromo-4-fluoro-1-methyl-1H-imidazole (CAS 1823245-72-2)
- (2R,3R,4R,5S,6R)-6-(hydroxymethyl)-5-(((2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2,3,4-triol (CAS 133-99-3)
- 5-Iodoisoindolin-1-one (CAS 897958-99-5)
- Landiolol Impurity 106 (CAS CATO-C4X-2621106)
- 2-Bromopyridine-4-boronic Acid Pinacol Ester (CAS 458532-82-6)
- 2-Oxa-5-azabicyclo[2.2.1]Heptane-4-carboxylic acid (CAS 1860808-48-5)
- 3-Ethoxy-1-methyl-1h-pyrazol-4-amine (CAS 1356543-43-5)
- N-(5-(4-Fluorophenyl)-1,3,4-oxadiazol-2-yl)-1-methyl-1H-pyrazole-3-carboxamide (CAS 1169950-10-0)
- 2-(2-Chloro-3-fluorophenyl)acetonitrile (CAS 874285-20-8)
- Tirzepatide Impurity 34 (CAS CATO-C4X-324034)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com