3,5-Dihydro-4H-pyrimido[5,4-b]indol-4-one, 97% CAS 61553-71-7
| CAS No. | 61553-71-7 |
| Molecular Formula | C10H7N3O |
| Molecular Weight | 185.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,5-Dihydro-4H-pyrimido[5,4-b]indol-4-one, 97% (C10H7N3O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
3,5-Dihydro-4H-pyrimido[5,4-b]indol-4-one, 97% (CAS 61553-71-7), molecular formula C10H7N3O and molecular weight 185.18 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.
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 | C10H7N3O |
| Molecular Weight | 185.18 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.) | 1974 |
| Nitrogen Atoms | 3 |
Related Dihydro Standards
- (S)-Dihydro-1'H-spiro[[1,3]dioxolane-2,6'-pyrrolo[1,2-c]oxazol]-3'(5'H)-one (CAS 1447616-10-5)
- 1,5-dihydro-4H-pyrazolo[4,3-c]quinolin-4-one (CAS 897657-55-5)
- 1,5-Dihydro-6H-[1,2]diazepino[4,5,6-cd]indol-6-one (CAS 65923-21-9)
- 3,4-Dihydro-2H-pyrido[4,3-e][1,2,4]thiadiazine 1,1-dioxide (CAS 163136-52-5)
- 6,7-Dihydro-4H-pyrano[4,3-d]thiazole-2-carboxylic acid (CAS 740787-78-4)
- 3,4-Dihydro-2H-spiro[naphthalene-1,2'-oxirane]-3'-carbonitrile (CAS 117146-44-8)
- 7,8-dihydro-6H-pyrido[1,2-a]indol-9-one (CAS 131849-07-5)
- 3-Phenyl-5,6-dihydro-4H-cyclopenta[d]isoxazole (CAS 13243-54-4)
Recommended Standards
- 3,3-Dimethyl-2,5-dioxopyrrolidin-1-yl acetate (CAS 428861-30-7)
- 3-Amino-3-(5-(hydroxymethyl)furan-2-yl)propanoic acid (CAS 682803-04-9)
- 3-(Imidazo[1,2-a]pyridin-6-yl)-3-oxopropanenitrile (CAS 948883-29-2)
- 3-cyanobenzene-1-sulfonyl fluoride (CAS 402-27-7)
- (4-(4-Bromophenyl)-1H-pyrrol-3-yl)(phenyl)methanol (CAS 338413-73-3)
- 2-Methylbenzo[d][1,3]dioxole-5-carbonyl chloride (CAS 59637-51-3)
- 2-[(3,4-Dichlorophenyl)methoxy]-5-[(4-methoxyphenoxy)methyl]-1,3-thiazole (CAS 339105-02-1)
- (3-²H)furan-2-carboxylic acid (CAS 53599-20-5)
- 2-(Tetrahydrofuran-3-yl)cyclopropanecarbaldehyde (CAS 1823315-27-0)
- Benzyl 3-((2-hydroxyethyl)(isopropyl)amino)piperidine-1-carboxylate (CAS 1353953-22-6)
- (2R,4R)-4-((tert-Butoxycarbonyl)amino)-5-(4-hydroxy-3-nitrophenyl)-2-methylpentanoic acid (CAS 2361404-36-4)
- methyl 7-bromo-5-methyl-1H-pyrazolo[4,3-d]pyrimidine-3-carboxylate (CAS 2091031-85-3)
- 2,6-Dichloro-4-(trichloromethyl)pyridine (CAS 22652-14-8)
- Semaglutide impurity 83 (CAS CATO-C4X-222683)
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