Chromeno[4,3-c]pyrazol-4(1H)-one CAS 4744-64-3
| CAS No. | 4744-64-3 |
| Molecular Formula | C10H6N2O2 |
| Molecular Weight | 186.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Chromeno[4,3-c]pyrazol-4(1H)-one (CAS 4744-64-3) is a high-purity analytical reference standard with the molecular formula C10H6N2O2 and a molecular weight of 186.17 g/mol.
Chromeno[4,3-c]pyrazol-4(1H)-one (C10H6N2O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Chromeno[4,3-c]pyrazol-4(1H)-one 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 | C10H6N2O2 |
| Molecular Weight | 186.17 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
Related Chromeno Standards
- Chromeno[3,2-c]pyrazol-9(1H)-one (CAS 111570-53-7)
- Chromeno[3,4-d][1,2,3]triazol-4(3H)-one (CAS 40235-42-5)
- 10H-Chromeno[3,2-b]pyridin-10-one (CAS 54629-31-1)
- Chromeno[3,4-b]pyridin-5-one (CAS 65297-93-0)
- 5H-Chromeno[3,4-c]pyridin-8-amine (CAS 1622889-76-2)
- 5H-chromeno[4,3-d]pyrimidin-2-amine (CAS 109466-23-1)
- 2-(Chromeno[4,3-c]pyrazol-1(4H)-yl)acetic acid (CAS 1280694-94-1)
- Methyl chromeno[4,3-c]pyrazole-2(4H)-carboxylate (CAS 866135-90-2)
Recommended Standards
- Benzofuro[3,2-d]pyrimidin-4(3H)-one (CAS 39786-36-2)
- Cyclobuta[b]quinoxaline-1,2(3H,8H)-dione (CAS 20420-52-4)
- benzofuro[2,3-d]pyridazin-4(3H)-one (CAS 50266-85-8)
- Diethyl 2-Diazomalonate (CAS 5256-74-6)
- 3-(4-Butoxyphenyl)-N'-(3,4-dimethoxybenzylidene)-1H-pyrazole-5-carbohydrazide (CAS 634899-37-9)
- 2-(4-Chlorophenyl)-2,3-dihydro-1H-imidazo[1,2-b]pyrazole-7-carboxylic acid (CAS 1713174-89-0)
- (3S)-2,3-dihydro-1-benzofuran-3,5-diamine (CAS 1259903-48-4)
- 3α-acetyloxylanosta-8,24-dien-21-oic acid (CAS 174391-64-1)
- (S)-(-)-Carbidopa-d3 H2O (ring-d3) (CAS 1276197-58-0)
- 1-(4-(2-Hydroxyethyl)-1,4-diazepan-1-yl)ethanone (CAS 23207-72-9)
- 5-Bromo-2-methylbenzo[b]thiophene-1,1-dioxide (CAS 63166-90-5)
- 6-(Cyclopropylamino)-4-methylnicotinic acid (CAS 1355197-15-7)
- 3-Phenyl-N-propyl-N-(thiophen-3-ylmethyl)acrylamide (CAS 1235701-33-3)
- a2,3-Sialylglycopeptide (CAS 189035-43-6)
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