4-Amino-1,3-benzenedisulfonic Acid CAS 137-51-9
| CAS No. | 137-51-9 |
| Molecular Formula | C6H7NO6S2 |
| Molecular Weight | 253.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Amino-1,3-benzenedisulfonic Acid is closely related to a carbohydrate-derived structure, an amide group, a sulfone group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 4-Amino-1,3-benzenedisulfonic Acid (CAS 137-51-9), a certified reference material (molecular formula C6H7NO6S2, MW 253.25 g/mol) for analytical method development and quality control.
Owing to a carbohydrate-derived structure, an amide group, a sulfone group, 4-Amino-1,3-benzenedisulfonic Acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 253.25 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.
As a certified reference material (CRM), 4-Amino-1,3-benzenedisulfonic Acid 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 | C6H7NO6S2 |
| Molecular Weight | 253.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Amino Standards
- Methyl 4-amino-3-(2-ethoxy-2-oxoethoxy)benzoate (CAS 1096309-38-4)
- 1-Amino-4-methoxyanthracene-9,10-dione (CAS 116-83-6)
- 1-Amino-5-methoxyanthracene-9,10-dione (CAS 17734-85-9)
- Methyl 4-amino-2-(2-ethoxy-2-oxoethoxy)benzoate (CAS 1979546-50-3)
- (3-Amino-7-hydroxybenzofuran-2-yl)(phenyl)methanone (CAS 301538-51-2)
- 1-Amino-2-(hydroxymethyl)anthracene-9,10-dione (CAS 24094-44-8)
- 5-Amino-1,3-benzenedissulfonic acid (CAS 5294-05-3)
- Methyl 6-amino-5-(3-ethoxy-3-oxopropyl)pyrimidine-4-carboxylate (CAS 893444-13-8)
Recommended Standards
- 2-(3-Fluoro-4-methoxyphenyl)thiazole-4-carboxylic acid (CAS 1368573-12-9)
- Methyl 5-{[(tert-Butoxy)carbonyl]amino}pyrimidine-2-carboxylate (CAS 1383802-16-1)
- Methyl (S)-3-(((benzyloxy)carbonyl)amino)-2-hydroxypropanoate (CAS 135582-87-5)
- 3-(1-Deoxyribofuranosyl)benzamide (CAS 138385-29-2)
- 2-((2-Fluorophenyl)thio)acetaldehyde (CAS 1248249-23-1)
- 3-[(4-tert-butylphenyl)formamido]propanoic acid (CAS 111830-21-8)
- 5-fluoro-8-nitroquinoline (CAS 152167-85-6)
- Methyl 3-Amino-3-phenylpropanoate (CAS 14898-52-3)
- (S)-2-Aminopropanal (CAS 4744-12-1)
- 4-Chloro-N-(1-cyclopropylethyl)aniline (CAS 1019518-64-9)
- (E)-({4-[(4-chlorophenyl)sulfanyl]-3-nitrophenyl}methylidene)[(2,6-dichlorophenyl)methoxy]amine (CAS 477851-93-7)
- 3-Bromo-4-(3,3,3-trifluoropropoxy)benzaldehyde (CAS 1342393-16-1)
- Cyanomethyl acrylate (CAS 13818-40-1)
- Semaglutide impurity 85 (CAS CATO-C4X-222685)
Why CATO?
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