4-(2,3-Dimethoxy-8-oxo-5,8,12,12a-tetrahydropyrazolo[3',4':4,5]pyrido[2,1-a]isoquinolin-11(6H)-yl)benzonitrile CAS 685108-21-8
| CAS No. | 685108-21-8 |
| Molecular Formula | C23H20N4O3 |
| Molecular Weight | 400.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-(2,3-Dimethoxy-8-oxo-5,8,12,12a-tetrahydropyrazolo[3',4':4,5]pyrido[2,1-a]isoquinolin-11(6H)-yl)benzonitrile.
4-(2,3-Dimethoxy-8-oxo-5,8,12,12a-tetrahydropyrazolo[3',4':4,5]pyrido[2,1-a]isoquinolin-11(6H)-yl)benzonitrile (CAS 685108-21-8), molecular formula C23H20N4O3 and molecular weight 400.43 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-(2,3-Dimethoxy-8-oxo-5,8,12,12a-tetrahydropyrazolo[3',4':4,5]pyrido[2,1-a]isoquinolin-11(6H)-yl)benzonitrile (C23H20N4O3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 4-(2,3-Dimethoxy-8-oxo-5,8,12,12a-tetrahydropyrazolo[3',4':4,5]pyrido[2,1-a]isoquinolin-11(6H)-yl)benzonitrile 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 | C23H20N4O3 |
| Molecular Weight | 400.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 4 |
Related Dimethoxy Standards
- 3,6-Dimethoxy-6-(4-methoxyphenyl)-6H-chromeno[3,4-b]quinoxaline (CAS 1807-99-4)
- 6,7-Dimethoxy-12,16,18,25-tetraazahexacyclo[12.11.0.0^{3,12}.0^{4,9}.0^{17,25}.0^{19,24}]pentacosa-1(14),4(9),5,7,15,17,19(24),20,22-nonaen-13-one (CAS 685107-15-7)
- 2-(4,5-Dimethoxy-2-nitrophenyl)-1H-imidazo[4,5-b]phenazine (CAS 303059-18-9)
- Methyl 3,3-dimethoxy-2-[2-[[6-(trifluoromethyl)pyridin-2-yl]oxymethyl]phenyl]propanoate (CAS 1448851-52-2)
- (S)-(2,2'-Dimethoxy-[1,1'-binaphthalene]-3,3'-diyl)diboronic acid (CAS 428874-68-4)
- (S)-2,2'-Dimethoxy-1,1'-binaphthyl-3,3'-diyldiboronic acid, 97% (CAS 220204-00-2)
- (2’,6’-Dimethoxy-2-biphenylyl)diphenylphosphine (CAS 819867-24-8)
- (2,5-Dimethoxy-1,4-phenylene)bis(diisopropylphosphine oxide) (CAS 1426397-81-0)
Recommended Standards
- 2-Amino-5-ethoxybenzenesulphonicacid (CAS 6448-82-4)
- 1-Allyl-2-imino-10-methyl-5-oxo-N-(pyridin-3-ylmethyl)-2,5-dihydro-1H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide (CAS 510761-30-5)
- 7-(((9H-Fluoren-9-yl)methoxy)carbonyl)-5,6,7,8-tetrahydro-1,7-naphthyridine-2-carboxylic acid (CAS 2137569-55-0)
- 1-[[2-[(1S)-1-Aminoethyl]-4-oxazolyl]carbonyl]-L-prolyl-L-phenylalanine (CAS 647011-12-9)
- Pregabalin-d4 (CAS 1276197-54-6)
- Ethyl 5-ethylimidazo[2,1-b]thiazole-6-carboxylate (CAS 488115-57-7)
- N-hexyl-1H-pyrrolo[2,3-d]pyrimidin-4-amine (CAS 57357-98-9)
- 3-Chloro-5-cyclopropylpyridazine (CAS 1850276-59-3)
- 4-Methoxyphenyl 2-(4-piperidinyl)ethyl ether (CAS 946727-44-2)
- Methyl 2-amino-4,6-dimethoxybenzoate (CAS 379228-26-9)
- 1-(4-Fluoro-2-(methylsulfonyl)phenyl)-1,4-diazepane hydrochloride (CAS 1185015-65-9)
- 2-Chloro-N-(phenylcarbonothioyl)acetamide (CAS 1208081-70-2)
- Estradiol EP Impurity D-d3 (delta-9(11)-Estradiol-d3) (CAS 791-69-5 (non-labelled))
- Semaglutide impurity 76 (CAS CATO-C4X-222676)
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