1,3-Dimethyl-4-nitro-1h-pyrazole-5-carbohydrazide CAS 263156-79-2
| CAS No. | 263156-79-2 |
| Molecular Formula | C6H9N5O3 |
| Molecular Weight | 199.17 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.
1,3-Dimethyl-4-nitro-1h-pyrazole-5-carbohydrazide (CAS 263156-79-2), molecular formula C6H9N5O3 and molecular weight 199.17 g/mol, is a CATO reference standard with documented purity and traceability.
1,3-Dimethyl-4-nitro-1h-pyrazole-5-carbohydrazide (C6H9N5O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 1,3-Dimethyl-4-nitro-1h-pyrazole-5-carbohydrazide 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 | C6H9N5O3 |
| Molecular Weight | 199.17 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 5 |
Related Dimethyl Standards
- 1,5-Dimethyl-4-nitro-1h-pyrazole-3-carbohydrazide (CAS 1001755-91-4)
- 1,3-Dimethyl-2,4,6-trioxohexahydro-5-pyrimidinecarbaldehyde oxime (CAS 400074-64-8)
- 2-(3,5-Dimethyl-4-nitro-1H-pyrazol-1-yl)acetic acid (CAS 345637-69-6)
- Dimethyl 3-methylisoxazole-4,5-dicarboxylate (CAS 53847-49-7)
- methyl 1,3-dimethyl-4-nitro-1H-pyrazole-5-carboxylate (CAS 78208-69-2)
- Dimethyl 3-(cyanomethyl)pentanedioate (CAS 1709-26-8)
- Dimethyl (R)-2-(1-cyanopropan-2-yl)malonate (CAS 1889238-19-0)
- Dimethyl(2-nitrophenyl)phosphine oxide (CAS 56964-01-3)
Recommended Standards
- 1,1,1-Trifluoro-3-morpholinopropan-2-ol (CAS 478068-15-4)
- 1-Amino-4-ethoxy-2-(trifluoromethyl)but-3-en-2-ol (CAS 929975-10-0)
- 1-(2,2,2-Trifluoroethyl)-1H-indole (CAS 90732-29-9)
- 2-((6-Amino-5-nitropyrimidin-4-yl)amino)ethan-1-ol (CAS 98197-64-9)
- 6-Methyl-1-[(4-methylphenyl)methyl]-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid (CAS 871548-24-2)
- (2E)-1-(4-Bromophenyl)-3-(3,4,5-trimethoxyphenyl)prop-2-en-1-one (CAS 284488-41-1)
- 3,5-Dimethoxy-2-methylpyridine (CAS 1803812-65-8)
- Ethyl 8-(2,3-dichlorophenyl)-8-oxooctanoate (CAS 898777-93-0)
- U-76074 (CAS 119813-15-9)
- 5-Amino-1-(3-methylphenyl)-1H-pyrazole-4-carboxamide (CAS 1171627-74-9)
- 2-(Methylsulfonyl)thieno[3,2-d][1,2,3]diazaborinin-1(2H)-ol (CAS 67398-09-8)
- (3-(Trifluoromethyl)cyclopentyl)methanamine (CAS 1461706-09-1)
- Methyl 4-methoxy-5-sulfamoylthiophene-3-carboxylate (CAS 924307-87-9)
- Neuropeptide W-23 (rat) (CAS 383415-89-2)
Why CATO?
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