(S)-3-iodo-7-methyl-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one CAS 1639901-75-9
| CAS No. | 1639901-75-9 |
| Molecular Formula | C7H8IN3O |
| Molecular Weight | 277.06 g/mol |
| 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.
(S)-3-iodo-7-methyl-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one (CAS 1639901-75-9), molecular formula C7H8IN3O and molecular weight 277.06 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (S)-3-iodo-7-methyl-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one (C7H8IN3O) contains an amide group, a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system. 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 277.06 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures (S)-3-iodo-7-methyl-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one 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 | C7H8IN3O |
| Molecular Weight | 277.06 g/mol |
| Appearance | Off-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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
- Ethyl 2-iodonicotinate (CAS 154366-01-5)
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- 2-Ethoxy-4-iodonicotinaldehyde (CAS 1706453-26-0)
- 6-(benzyloxy)pyridine-3-carbonitrile (CAS 876516-71-1)
- 4-Chloro-5,8-dimethoxyquinoline-3-carbonitrile (CAS 214476-68-3)
- tert-Butyl 4-(2-(4-chlorophenoxy)acetyl)piperazine-1-carboxylate (CAS 1144037-43-3)
- 2-(Morpholinosulfonyl)-n-(pyridin-3-ylmethyl)ethan-1-amine dihydrochloride (CAS 1255147-17-1)
- 5-(1-Phenylpropan-2-yl)-1H-pyrazole-3-carboxylic acid (CAS 856257-03-9)
- Olaparib Impurity 155 (CAS 763111-46-2(free base))
- H-D-Asp(OtBu)-OH (CAS 64960-75-4)
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