Naphthol AS-GR phosphate disodium salt CAS 100929-51-9
| CAS No. | 100929-51-9 |
| Molecular Formula | C22H36NO5P |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Naphthol AS-GR phosphate disodium salt (CAS 100929-51-9) is a high-purity analytical reference standard with the molecular formula C22H36NO5PNa and a molecular weight of 448.50 g/mol.
Structurally, Naphthol AS-GR phosphate disodium salt (C22H36NO5PNa) contains a steroid core, an amide group, a phosphate ester group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.5, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 448.50 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Naphthol AS-GR phosphate disodium salt 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 | C22H36NO5P 2*Na |
| Molecular Weight | 448.50 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, 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 |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 1 |
Related Naphthol Standards
- 4-Methyl-1-naphthol (CAS 10240-08-1)
- Naphthol AS Nonanoate (CAS 10523-82-7)
- 1-Methyl-2-naphthol (CAS 1076-26-2)
- 2-Naphthol-6,8-Disulfonic Acid (CAS 118-32-1)
- Naphthol AS-BI (CAS 1237-75-8)
- 1-Naphthol-D7 (CAS 124251-84-9)
- 1,1′-Di-2-naphthol bis(trifluoromethanesulfonate) (CAS 128575-34-8)
- 1-Naphthol-13C10 (CAS 1329509-54-7)
Recommended Standards
- S-acetyl-PEG3-phosphonic acid ethyl ester (CAS 2173125-29-4)
- 4-Amino-5-(difluoromethyl)-6-hydroxypicolinonitrile (CAS 1805349-22-7)
- 4,7-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-[1,2,5]thiadiazolo[3,4-c]pyridine (CAS 1883586-01-3)
- N-(5-Amino-2-fluorophenyl)-2-isobutoxybenzamide (CAS 1020057-28-6)
- Ethyl 3-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate (CAS 1198615-84-7)
- 2-Fluoro-5-(methoxycarbonylmethyl)benzeneboronic acid pinacol ester, 97% (CAS 944317-66-2)
- 3-{3-[1-(methylamino)ethyl]phenyl}-1,3-oxazolidin-2-one (CAS 1491308-07-6)
- (3S,5S)-3-Acetyl-5-ethyldihydrofuran-2(3H)-one (CAS 153655-37-9)
- Ethyl 3-(nitromethyl)hexanoate (CAS 128013-61-6)
- Peptide Impurity 82 (CAS 10491-78-8)
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