Intermediates
4-Amino-1H-pyrazolo[3,4-d]pyrimidine
Quick view. Fused pyrazolo[3,4-d]pyrimidine heterocycle bearing an exocyclic amino group at the 4-position. CAS 20289-44-5. Catalog target purity: ≥98%. Availability: Inquiry only — contact BX Lab to confirm current availability.
![Structure of 4-amino-1H-pyrazolo[3,4-d]pyrimidine](/structures/33a52b3fadb3a6f5.svg)
Product profile
4-Amino-1H-pyrazolo[3,4-d]pyrimidine is classified as intermediates (Formula C5H5N5; molecular weight 135.13 g/mol).
4-Amino-1H-pyrazolo[3,4-d]pyrimidine provides a reactive functional group for conjugation, immobilization or linker-extension studies.
For 4-Amino-1H-pyrazolo[3,4-d]pyrimidine, functional handles may require orthogonal protection, pH control and rapid purification to avoid hydrolysis, oxidation or cross-reaction.
Names and search terms
Confirmed or normalized name variants
- 4H-Pyrazolo[3,4-d]pyrimidin-4-amine
- 4-Aminopyrazolo[3,4-d]pyrimidine
Useful catalog search terms
- 20289-44-5
Physicochemical data
| Ring system | Pyrazolo[3,4-d]pyrimidine |
|---|---|
| Substitution | Exocyclic amino group at the 4-position |
| InChI | InChI=1S/C5H5N5/c6-4-3-1-9-10-5(3)8-2-7-4/h1-2,4H,6H2 |
| InChIKey | VAOHIJMLMILFFA-UHFFFAOYSA-N |
| SMILES | NC1N=CN=C2N=NC=C21 |
Release documentation
The current specification defines the analytical method and acceptance criteria; the released lot result is reported on the CoA.
Additional HPLC, MS or NMR documentation can be agreed during technical review where available.
Product-specific evaluation notes
Potential advantages
- Reactive handles make the product adaptable across dye-labeling, surface-coupling and ligand-conjugation workflows.
Method limitations
- Functional handles may require orthogonal protection, pH control and rapid purification to avoid hydrolysis, oxidation or cross-reaction.
These points describe 4-Amino-1H-pyrazolo[3,4-d]pyrimidine or its named chemical feature. Broader product-family guidance is maintained on the category page.
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Frequently asked questions
Can the package size for 4-Amino-1H-pyrazolo[3,4-d]pyrimidine be customized?
Yes. Share the initial quantity, expected future scale, delivery timeline and packaging preference for review.
What information should be included in a quote request?
Quote catalog number BX-INTE-0063 and CAS 20289-44-5, the intended research workflow, required quantity and any additional HPLC, MS or NMR documentation needed.