Etazolate
A pyrazolopyridine that is 1H-pyrazolo[3,4-b]pyridine which is substituted at positions 1, 4, and 5 by ethyl, 2-isopropylidenehydrazino, and ethoxycarbonyl groups, respectively. A phosphodiesterase IV inhibitor with antidepressant and anxiolytic properties. — ChEBI
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Identity & molecular properties
Source-linked values| CAS number | 51022-77-6 | ChEBI ↗ |
| Molecular formula | C14H19N5O2 | ChEBI ↗ |
| Molar mass | 289.339 g/mol | ChEBI ↗ |
| Monoisotopic mass | 289.15387 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:138502 | ChEBI ↗ |
Cross-source molecular data
PubChem| Molar mass | 289.33 g/mol | PubChem ↗ |
| Exact mass | 289.15387487 Da | PubChem ↗ |
| Computed XLogP | 2.1 | PubChem ↗ |
| Topological polar surface area (Ų) | 81.4 | PubChem ↗ |
| H-bond donors | 1 | PubChem ↗ |
| H-bond acceptors | 6 | PubChem ↗ |
| Rotatable bonds | 6 | PubChem ↗ |
PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.
Names & structural identifiers
Copy any identifieretazolateethyl 1-ethyl-4-(2-isopropylidenehydrazino)-1H-pyrazolo[3,4-b]pyridine-5-carboxylateOPQRBXUBWHDHPQ-UHFFFAOYSA-NCCOC(=O)c1cnc2c(cnn2CC)c1NN=C(C)CInChI=1S/C14H19N5O2/c1-5-19-13-10(8-16-19)12(18-17-9(3)4)11(7-15-13)14(20)21-6-2/h7-8H,5-6H2,1-4H3,(H,15,18)Names & synonyms
Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.
Classification & relationships
ChEBI ontologyRoles recorded in ChEBI
Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.
Mass ↔ amount of substance
Calculated from sourced massUses 289.339 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Elemental composition
Theoretical mass fractionsCNOHCalculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.
Research & patent references
Selected source associationsSources & record history
Checked 27 Sep 2026Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0
PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.