4-Acetamido-4-aminostilbene-2,2-disulfonic Acid Disodium Salt CAS 78211-74-2
| CAS No. | 78211-74-2 |
| Molecular Formula | C16H16N2O7S2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 435.42 g/mol gives 4-Acetamido-4-aminostilbene-2,2-disulfonic Acid Disodium Salt distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Acetamido-4-aminostilbene-2,2-disulfonic Acid Disodium Salt (CAS 78211-74-2), molecular formula C16H16N2O7S2Na and molecular weight 435.42 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 4-Acetamido-4-aminostilbene-2,2-disulfonic Acid Disodium Salt is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 435.42 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | C16H16N2O7S2 2*Na |
| Molecular Weight | 435.42 g/mol |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Acetamido Standards
- 3-Acetamido-3-(4-nitrophenyl)propanoic acid (CAS 100061-23-2)
- 3-Acetamido-4-methylpentanoic acid (CAS 1001611-01-3)
- 2-Acetamido-3-acetoxybenzoic Acid Methyl Ester (CAS 100193-10-0)
- 2-Acetamido-3-cyclohexylpropanoic acid (CAS 100400-96-2)
- 2-ACetamido-1,3,4,6-tetra-o-acetyl-2-deoxy-beta-d-thioglucopyranose (CAS 10043-46-6)
- 1-Acetamido-3-amino-2,6-dimethylbenzene (CAS 100445-94-1)
- 3-Acetamido-2,4-dimethylphenol (CAS 100445-95-2)
- N-(6-Acetamido-3-(2-methoxyethyl)benzo[d]thiazol-2(3H)-ylidene)acetamide (CAS 1005942-17-5)
Recommended Standards
- 2-Phenylpyrazolo[1,5-a]pyrimidin-7-ol (CAS 90019-56-0)
- S-(3-Aminopropyl) benzothioate hydrochloride (CAS 79417-77-9)
- 1-Benzyl-4-methoxy-1h-indole-2-carboxylic acid (CAS 1048660-06-5)
- n-(4-Nitrophenyl)-1h-1,3-benzodiazol-2-amine (CAS 26946-70-3)
- 3-(tert-Butyl)-2-hydroxybenzonitrile (CAS 340131-70-6)
- 2-((N-(2,4-dichloro-5-methoxyphenyl)-4-fluorophenyl)sulfonamido)-N-(4-fluorophenyl)acetamide (CAS 338967-37-6)
- 3-(6,8-Dichloro-2-methyl-1,2,3,4-tetrahydroisoquinolin-4-yl)benzoic acid (CAS 543737-13-9)
- 2-(tert-Butyl)-3-isopropylphenol (CAS 1243386-72-2)
- 3-(Acetylamino)benzoyl chloride (CAS 90531-74-1)
- Semaglutide Impurity 186 (CAS CATO-C4X-2226186)
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