1H-Pyrazole-3,5-dicarboxylic acid CAS 3112-31-0
| CAS No. | 3112-31-0 |
| Molecular Formula | C5H4N2O4 |
| Molecular Weight | 156.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1H-Pyrazole-3,5-dicarboxylic acid is closely related to a carbohydrate-derived structure, an amide group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 1H-Pyrazole-3,5-dicarboxylic acid (CAS 3112-31-0), a certified reference material (molecular formula C5H4N2O4, MW 156.10 g/mol) for analytical method development and quality control.
Structurally, 1H-Pyrazole-3,5-dicarboxylic acid (C5H4N2O4) contains a carbohydrate-derived structure, an amide group. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 156.10 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.
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 | C5H4N2O4 |
| Molecular Weight | 156.10 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
Related H Standards
- 1H-Pyrazole-1,5-dicarboxylic acid (CAS 90993-83-2)
- 1H-Pyrazole-3,4-dicarboxylic acid (CAS 31962-35-3)
- 3H-Pyrazole-3,5-dicarboxylic acid (CAS 85908-17-4)
- 1H-Pyrazole, 5-chloro-4-ethynyl-1,3-dimethyl- (CAS 61514-57-6)
- 4H-Pyrazole-3-carboxylic acid, 5-methyl-, ethyl ester (CAS 886495-75-6)
- 1H-Pyrazole-3,5-dicarboxamide (CAS 1397683-79-2)
- 1H-pyrazole-4-sulfonamide (CAS 27429-59-0)
- 1h-Pyrazole-4-sulfonohydrazide (CAS 1183491-92-0)
Recommended Standards
- 2-((1H-1,2,4-triazol-5-yl)amino)-2-oxoacetic acid (CAS 39958-42-4)
- 2-(2,5-Dioxoimidazolidin-4-ylidene)acetic acid (CAS 5427-28-1)
- 1-Ethynyl-2,3,4-trifluorobenzene (CAS 819861-96-6)
- 2-(4-Nitroisoxazol-3-yl)acetaldehyde (CAS 87149-77-7)
- 2-Chloro-4-(difluoromethoxy)phenol (CAS 88798-11-2)
- 1-Ethyl-3-methyl-N-(pyridin-3-yl)-1H-pyrazole-4-carboxamide (CAS 515828-94-1)
- 4-Methyl-2-phenylthiophene (CAS 14300-29-9)
- 3-(2-Thenoyl)pyridine (CAS 21327-72-0)
- 2-Amino-3-(3-chloro-2,4-difluorophenyl)propanoic acid (CAS 1259964-91-4)
- (S)-3-(2-methoxyphenoxy)pyrrolidine (CAS 788123-19-3)
- Methyl 6-chloro-1,5-dihydroimidazo[1,2-a]pyridine-8-carboxylate (CAS 1272758-29-8)
- H-Tyr-Ser-Pro-Trp-Thr-Asn-Phe-OH (CAS 228544-21-6)
- 2-Chloro-5,6-dibromobenzo[d]thiazole, 97% (CAS 1209460-20-7)
- C-Peptide 2 (rat) (CAS 41594-08-5)
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