1-Hydroxy-4-nitroanthraquinone CAS 81-65-2
| CAS No. | 81-65-2 |
| Molecular Formula | C14H7NO5 |
| Molecular Weight | 269.21 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 1-Hydroxy-4-nitroanthraquinone.
1-Hydroxy-4-nitroanthraquinone (CAS 81-65-2) is a high-purity analytical reference standard with the molecular formula C14H7NO5 and a molecular weight of 269.21 g/mol.
Structurally, 1-Hydroxy-4-nitroanthraquinone (C14H7NO5) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 269.21 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), 1-Hydroxy-4-nitroanthraquinone 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 | C14H7NO5 |
| Molecular Weight | 269.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Hydroxy Standards
- 1-Hydroxy-2-nitroanthracene-9,10-dione (CAS 5227-66-7)
- 1-Hydroxy-6-nitroanthracene-9,10-dione (CAS 54390-28-2)
- 1-Hydroxy-7-nitroanthracene-9,10-dione (CAS 52808-13-6)
- 1-Hydroxy-8-nitroanthracene-9,10-dione (CAS 2501-14-6)
- 2-Hydroxy-1-nitroanthracene-9,10-dione (CAS 56600-62-5)
- Methyl 3-hydroxy-3-(trifluoromethyl)hexahydro-2H-isoxazolo[2,3-a]pyridine-2-carboxylate (CAS 317833-14-0)
- 4-Hydroxy-7-sulfoquinoline-3-carboxylic acid (CAS 63463-28-5)
- 3-Hydroxy-2,3-dimethylbutan-2-yl hydrogen (5-cyclopropylthiazol-4-yl)boronate (CAS 2223031-37-4)
Recommended Standards
- 1,3-Dioxo-2-(pyrimidin-2-yl)isoindoline-5-carboxylic acid (CAS 328549-52-6)
- 1-(Quinolin-8-yl)urea (CAS 32451-61-9)
- (4-Methyl-2,6-dinitrophenyl)alanine (CAS 19466-60-5)
- 2-(2-Formyl-6-methoxy-4-nitrophenoxy)propanoic acid (CAS 662154-26-9)
- 2-Chloro-7,8-difluoroquinoxaline (CAS 1384067-28-0)
- 1-(Isopropylsulfonyl)-5-methyl-1H-benzo[d]imidazol-2-amine (CAS 89313-43-9)
- 5-Chloro-2-(3-methoxyphenoxy)aniline (CAS 937606-31-0)
- 4-Bromo-2-methoxy-5-nitrobenzonitrile (CAS 2351149-59-0)
- Dabigatran Impurity 131 (CAS 429658-95-7)
- 2-Cyclopropyl-4-methylpyrimidine-5-carboxylic acid (CAS 954233-05-7)
- Boc-Sar-OtBu (CAS 396732-25-5)
- (Z)-8-Dodecen-1-yl acetate (CAS 28079-04-1)
- 5-Bromo-2-methoxy-3-methylphenol (CAS 244229-56-9)
- Semaglutide Impurity 82 (CAS CATO-C4X-222682)
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