5-(1H-Benzo[d]imidazol-2-yl)-1H-pyrazol-3-ol CAS 518357-35-2
| CAS No. | 518357-35-2 |
| Molecular Formula | C10H8N4O |
| Molecular Weight | 200.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-(1H-Benzo[d]imidazol-2-yl)-1H-pyrazol-3-ol (CAS 518357-35-2), a certified reference material (molecular formula C10H8N4O, MW 200.20 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, 5-(1H-Benzo[d]imidazol-2-yl)-1H-pyrazol-3-ol is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 200.20 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C10H8N4O |
| Molecular Weight | 200.20 g/mol |
| Appearance | Pale yellow to 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 4 |
Related H Standards
- 1-(1H-benzo[d]imidazol-2-yl)-1H-1,2,4-triazol-5-amine (CAS 87633-57-6)
- 2-(1H-Benzo[d]imidazol-2-yl)-5-methyl-1,3,4-oxadiazole (CAS 26286-46-4)
- 3-(1H-Benzo[d]imidazol-2-yl)-1H-pyrazol-5(4H)-one (CAS 518986-50-0)
- 4H-Benzo[4,5]imidazo[1,2-b]pyrazole-2-carboxamide (CAS 94782-81-7)
- 4H-Benzo[4,5]imidazo[1,2-b]pyrazole-3-carboxamide (CAS 86796-30-7)
- 4H-Benzo[b]imidazo[1,2-d][1,4]oxazine-7-carbaldehyde (CAS 1231192-01-0)
- 4H-benzo[b]imidazo[1,2-d][1,4]oxazine-6-carbaldehyde (CAS 876921-41-4)
- Benzo[4,5]imidazo[1,2-a]pyridine-7,8-diol (CAS 747365-76-0)
Recommended Standards
- 4-Methyl-[1,2,4]triazolo[4,3-a]quinoxalin-1(2H)-one (CAS 19848-94-3)
- 5-(4-Methoxyphenyl)-1H-1,2,3-triazole-4-carbonitrile (CAS 928206-95-5)
- 4-Methoxybenzo[4,5]imidazo[1,2-d][1,2,4]triazine (CAS 20029-09-8)
- 5-Amino-1-(3-aminopyridin-2-yl)-1H-pyrazole-4-carbonitrile (CAS 956160-85-3)
- 2-azido-1-(4-methoxyphenyl)ethan-1-one (CAS 6595-28-4)
- 4-{[(3-Methylphenyl)(methylsulfonyl)amino]methyl}benzoic acid (CAS 353502-15-5)
- Ethyl 8-(2,4,5-trimethoxyphenyl)-8-oxooctanoate (CAS 951887-99-3)
- 3-Bromo-8-methoxy-6,6-dimethyl-5H-benzo[b]carbazol-11(6H)-one (CAS 1256576-68-7)
- 8-Amino-6-chloro-3,4-dihydroquinolin-2(1H)-one (CAS 1330751-45-5)
- 4-Benzyl-5-(2-fluorophenyl)-4H-1,2,4-triazole-3-thiol (CAS 721415-98-1)
- Cefotaxime Impurity 10 (CAS CATO-C4X-120110)
- ((3S,4S)-4-Methylpyrrolidin-3-yl)methanol (CAS 1279034-51-3)
- ((4R,5R)-2,2-Dimethyl-1,3-dioxolane-4,5-diyl)bis(di(naphthalen-1-yl)methanol) (CAS 137536-94-8)
- Des-Lys20(Side Chain)-Semaglutide (CAS CATO-C4X-2226280)
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