4-Iodo-1H-pyrazol-3-amine CAS 81542-51-0
| CAS No. | 81542-51-0 |
| Molecular Formula | C3H4IN3 |
| Molecular Weight | 208.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-Iodo-1H-pyrazol-3-amine (CAS 81542-51-0), molecular formula C3H4IN3 and molecular weight 208.99 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-Iodo-1H-pyrazol-3-amine (C3H4IN3) is characterized by a nitrile group, iodine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
CATO manufactures 4-Iodo-1H-pyrazol-3-amine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C3H4IN3 |
| Molecular Weight | 208.99 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 3 |
Related Iodo Standards
- 5-Iodo-1-methyl-1h-1,2,3-triazole (CAS 1196152-43-8)
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- 2-Iodo-4-methyloxazole (CAS 1539210-11-1)
- 4-Iodo-1H-pyrazol-1-amine (CAS 1706448-04-5)
- 3-Iodo-1-methyl-1h-1,2,4-triazole (CAS 55847-41-1)
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- 4-Iodo-5-methylisoxazole (CAS 7064-38-2)
Recommended Standards
- 4-Bromo-2,5-difluorophenol (CAS 486424-36-6)
- 4-Amino-2,6-dichloro-5-nitropyrimidine (CAS 31221-68-8)
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- 5,6-Dichloro-3-nitropyrazin-2-amine (CAS 87155-51-9)
- 2-Methoxy-3,5-dimethylbenzaldehyde (CAS 16313-77-2)
- 2-(5-Methoxy-2-methylphenyl)pyrrolidine (CAS 1270342-56-7)
- 2-(3-Bromo-2,2-dimethylpropoxy)butane (CAS 1489663-65-1)
- 1-(4-Propylphenyl)propan-1-one (CAS 56147-30-9)
- 5-methyl-1H-pyrazolo[3,4-c]pyridine-3-carboxylic acid (CAS 1935634-54-0)
- Raloxifene 4-Monomethyl Ether (CAS 185415-07-0)
- 1-(1-(4-Methoxyphenyl)-5-morpholino-1H-pyrazol-3-yl)ethanone (CAS 61323-14-6)
- (1,4-dimethyl-3,6-dioxo-2,3,6,7-tetrahydro-1H-pyrazolo[3,4-b]pyridin-5-yl)acetic acid (CAS 1087784-33-5)
- 1',4'-Dihydro-3'H-spiro[piperidine-4,2'-quinoxalin]-3'-one dihydrochloride (CAS 1268983-14-7)
- Tirzepatide(sodium salt) (CAS 2023788-19-2(free base))
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