1,5-Dimethyl-1H-pyrazol-4-ol CAS 85985-67-7
| CAS No. | 85985-67-7 |
| Molecular Formula | C5H8N2O |
| Molecular Weight | 112.13 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.
1,5-Dimethyl-1H-pyrazol-4-ol (CAS 85985-67-7), molecular formula C5H8N2O and molecular weight 112.13 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a hydroxyl group, an ether linkage, 1,5-Dimethyl-1H-pyrazol-4-ol is typically white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 112.13 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).
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 | C5H8N2O |
| Molecular Weight | 112.13 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1981 |
| Nitrogen Atoms | 2 |
Related Dimethyl Standards
- 4,5-dimethyl-2,3-dihydro-1H-imidazol-2-one (CAS 1072-89-5)
- 2,5-Dimethyl-3(2H)-furanone (CAS 14400-67-0)
- 3,4-Dimethyl-1H-pyrazol-5-ol (CAS 145092-15-5)
- Dimethyl-1h-1,2,3-triazol-4-amine (CAS 1461713-95-0)
- 1,4-Dimethyl-1H-1,2,3-triazol-5-amine (CAS 1536564-18-7)
- 3,4-Dimethyl-2(5H)-furanone (CAS 1575-46-8)
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- 1,4-Dimethyl-1H-pyrazol-5(4H)-one (CAS 3310-38-1)
Recommended Standards
- 1,5-Dimethyl-1,2-dihydro-pyrazol-3-one (CAS 3201-28-3)
- 1-ethenylcyclopropane-1-carboxylic acid (CAS 343268-26-8)
- 1,4-dimethyl-2,3-dihydro-1H-imidazol-2-one (CAS 93782-02-6)
- 1-Ethyl-1h-1,2,4-triazol-3-amine (CAS 42786-04-9)
- N-(2-methoxyethyl)-N-methylglycine hydrochloride (CAS 1638221-47-2)
- 2-(Hydroxymethyl)-5-(trifluoromethoxy)phenol (CAS 1261829-86-0)
- ethyl 5-aminoimidazo[1,2-a]pyridine-3-carboxylate (CAS 35220-15-6)
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- 3-[3-(4-ethylphenyl)-1,2,4-oxadiazol-5-yl]propanoic acid (CAS 889946-88-7)
- 6-Fluoro-1,2,3,4-tetrahydro-naphthalen-1-ylamine (CAS 1220039-98-4)
- 1-(4-Iodophenyl)-2-(isopropylthio)ethan-1-one (CAS 1182904-44-4)
- Cyperin (CAS 33716-82-4)
- 1-But-3-En-1-Ynyl-4-Fluoro-Benzene (CAS 214552-85-9)
- α Bag Cell Peptide (1-9) (CAS 87549-52-8)
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