4-Ethyl-5-methylthiophene-3-carbohydrazide CAS 438225-41-3
| CAS No. | 438225-41-3 |
| Molecular Formula | C8H12N2OS |
| Molecular Weight | 184.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Ethyl-5-methylthiophene-3-carbohydrazide is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 4-Ethyl-5-methylthiophene-3-carbohydrazide (CAS 438225-41-3), a certified reference material (molecular formula C8H12N2OS, MW 184.26 g/mol) for analytical method development and quality control.
Based on its molecular formula C8H12N2OS, 4-Ethyl-5-methylthiophene-3-carbohydrazide contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 184.26 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures 4-Ethyl-5-methylthiophene-3-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 | C8H12N2OS |
| Molecular Weight | 184.26 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- 5-ethyl-4-methylthiophene-2-carbohydrazide (CAS 851169-15-8)
- 3-Methylthiophene-2,5-dicarboxylic acid (CAS 89677-40-7)
- 5-Methylthiophene-2,3-dicarboxylic Acid (CAS 46029-22-5)
- 4-Ethyl-5-methylthiophene-3-carbonyl chloride (CAS 1160248-82-7)
- 3-Methylthiophene-2-sulfonic acid (CAS 1159877-58-3)
- 5-Methylthiophene-3-sulfonamide (CAS 1017264-52-6)
- 3-Methylthiophene-2-sulfonamide (CAS 81417-51-8)
- 5-Methylthiophene-2-sulfonamide (CAS 53595-69-0)
Recommended Standards
- 4-Ethoxy-2-(ethylthio)pyrimidine (CAS 84289-47-4)
- 5-(1-Piperidinyl)-1,3,4-thiadiazol-2-amine (CAS 71125-46-7)
- 4,5-Dimethoxy-2-methylbenzene-1-thiol (CAS 78523-20-3)
- 5-(Cyclopentylthio)-4H-1,2,4-triazol-3-amine (CAS 861924-89-2)
- Tri(octan-2-yl) borate (CAS 24848-81-5)
- 5-Chloro-4-(2,4-dichlorophenyl)-1,2,3-thiadiazole (CAS 338407-85-5)
- 1-(Phenylsulfonyl)pyrrole (CAS 16851-82-4)
- 2-((5-Methoxy-1H-indol-3-yl)methylene)malononitrile (CAS 771574-78-8)
- 2-(2-Aminoethoxy)aniline (CAS 72210-17-4)
- 2-(Aminomethyl)-3-(difluoromethyl)-5-hydroxypyridine-4-methanol (CAS 1807082-24-1)
- 5-chloro-6-cyclopropyl-3-methylisoxazolo[5,4-b]pyridine-4-carboxylic acid (CAS 1011396-41-0)
- Eletriptan Impurity 12 (CAS 209682-64-4)
- (2E)-3-(Dimethylamino)-2-[(E)-4-methylpiperazine-1-carbonyl]prop-2-enenitrile (CAS 551930-69-9)
- Semaglutide Impurity 146 (CAS 2645421-68-5)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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