Chromeno[3,4-d][1,2,3]triazol-4(3H)-one CAS 40235-42-5
| CAS No. | 40235-42-5 |
| Molecular Formula | C9H5N3O2 |
| Molecular Weight | 187.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Chromeno[3,4-d][1,2,3]triazol-4(3H)-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 187.15 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.
Chromeno[3,4-d][1,2,3]triazol-4(3H)-one (CAS 40235-42-5), molecular formula C9H5N3O2 and molecular weight 187.15 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), Chromeno[3,4-d][1,2,3]triazol-4(3H)-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 | C9H5N3O2 |
| Molecular Weight | 187.15 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.) | 1968 |
| Nitrogen Atoms | 3 |
Related Chromeno Standards
- Chromeno[3,2-c]pyrazol-9(1H)-one (CAS 111570-53-7)
- Chromeno[4,3-c]pyrazol-4(1H)-one (CAS 4744-64-3)
- 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
- 6-Cyanoquinoxaline-2,3-dione (CAS 61875-40-9)
- Cyclobuta[b]pyrido[2,3-e]pyrazine-6,7(5H,8H)-dione (CAS 33528-01-7)
- 6-Cyanobenzofuran-2-carboxylic acid (CAS 84102-90-9)
- Cyclobuta[b]pyrido[3,4-e]pyrazine-6,7(5H,8H)-dione (CAS 33528-02-8)
- Methyl (2S,4S)-4-[4-(tert-butyl)phenoxy]-2-pyrrolidinecarboxylate hydrochloride (CAS 1354488-24-6)
- N-[(5-Fluoro-2-nitrophenyl)methyl]acetamide (CAS 2140316-94-3)
- N-cycloheptyl-4-(cyclopropanecarbonyl)-1H-pyrrole-2-carboxamide (CAS 860610-18-0)
- 4-Nitro-N-phenethylbenzamide (CAS 62497-65-8)
- 4-Bromo-2-methoxy-5-(trifluoromethyl)pyridine (CAS 1211580-59-4)
- 2-Formylphenyl benzenesulfonate (CAS 107189-77-5)
- 4-Phenyl-2-(pyridin-3-yl)thiazole-5-carboxylic acid (CAS 51492-89-8)
- 2-Chloro-6,7-difluoro-1H-benzo[d]imidazole (CAS 1388061-00-4)
- Methyl 2,3-dichloro-5-(difluoromethoxy)phenylacetate (CAS 1806297-70-0)
- Tirzepatide Impurity 36 (CAS CATO-C4X-324036)
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