Terephthalic Dihydrazide CAS 136-64-1
| CAS No. | 136-64-1 |
| Molecular Formula | C8H10N4O2 |
| Molecular Weight | 194.19 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.
Terephthalic Dihydrazide (CAS 136-64-1), molecular formula C8H10N4O2 and molecular weight 194.19 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H10N4O2, Terephthalic Dihydrazide contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 194.19 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.
As a certified reference material (CRM), Terephthalic Dihydrazide meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H10N4O2 |
| Molecular Weight | 194.19 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 4 |
Related Terephthalic Standards
- Terephthalic Acid, Mono-2-hydroxyethyl Ester (CAS 1137-99-1)
- Terephthalic-d4 Acid (CAS 60088-54-2)
- Terephthalic acid-2,2′-<SUP>13</SUP>C<SUB>2</SUB> (CAS 121191-53-5)
- terephthalic diisocyanate (CAS 104-49-4)
- Terephthalic Acid (CAS 100-21-0)
- terephthalic acid (CAS 16323-43-6)
- Terephthalic Acid Mono(2-bromoethyl) Ester (CAS 173550-97-5)
- Terephthalic acid compound with butane-1,1-diol (1:1) (CAS 26062-94-2)
Recommended Standards
- ethyl (5-amino-4-cyano-1H-pyrazol-1-yl)acetate (CAS 1356641-11-6)
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- 2-Amino-N-(2-oxo-2-(pyrazin-2-yl)ethyl)acetamide (CAS 1353962-94-3)
- Ethyl 3-methylpyrazolo[5,1-b]oxazole-6-carboxylate (CAS 1365957-06-7)
- (4,6-Dimethylpyridin-3-yl)methanamine (CAS 98489-36-2)
- 3-Bromo-2-(2,2-difluoroethoxy)-5-fluoroaniline (CAS 1178770-78-9)
- 6-Amino-7-methylquinoline-5,8-dione (CAS 98332-05-9)
- 1-(1-Bromo-2-fluorophenyl)-N,N-dimethylmethanamine (CAS 1809161-54-3)
- 2-Ethyl-5-(1H-indol-3-yl)oxazole (CAS 73053-81-3)
- ethyl 4-(2-methylpropanoyl)-1H-pyrrole-2-carboxylate (CAS 151982-52-4)
- 2-(5-((1,3-Dioxoisoindolin-2-yl)methyl)-1,2,4-oxadiazol-3-yl)acetamide (CAS 1809484-44-3)
- 1-(4-Chlorophenyl)-3-(2-(2-(3-methyl-4-nitroisoxazol-5-yl)vinyl)thiophen-3-yl)prop-2-en-1-one (CAS 256353-68-1)
- Cinacalcet Impurity 69 (CAS 114748-82-2)
- Des-Tyr10-Tirzepatide (CAS CATO-CPTD788680)
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