1H-Pyrazole-1-carboxamidine hydrochloride (CAS 4023-02-3) is supplied by Monuo Chemical for specialty chemical and custom synthesis purchasing. It is also referenced as 1-amidinopyrazole hydrochloride, pyrazole-1-carboxamidine HCl and Praxadine hydrochloride. Buyers typically search by product name or CAS when sourcing guanylation reagents and heterocyclic building blocks for peptide and medicinal-chemistry R&D.
Key Specifications at a Glance
| Product Name | 1H-Pyrazole-1-carboxamidine hydrochloride |
|---|---|
| CAS Number | 4023-02-3 |
| Molecular Formula | C4H7ClN4 |
| Molecular Weight | 146.58 g/mol |
| Chemical Class | Pyrazole guanidine salt / specialty synthesis reagent |
| Appearance | White to light yellow crystals or crystalline powder (supplier literature) |
| Melting Point | About 167–170 °C (lit.) |
| Purity / Specification | 98%; confirm assay on the batch COA |
| Solubility | Water-soluble (supplier literature); confirm for your method |
| Typical Use Area | Peptide / guanylation R&D; heterocyclic building-block supply |
| Category | Custom synthesis |
| Documents | COA, TDS, SDS on request |
| Supply Origin | China | Worldwide shipping |
What Is 1H-Pyrazole-1-carboxamidine hydrochloride?
1H-Pyrazole-1-carboxamidine hydrochloride (CAS 4023-02-3) is a pyrazole-substituted guanidine hydrochloride salt. Molecular formula C4H7ClN4; molecular weight about 146.58 g/mol. Always match CAS 4023-02-3 on the batch COA.
ChemicalBook and supplier literature describe it as a stable guanylation reagent for primary and secondary aliphatic amines under mild conditions, and as a useful reagent in peptide synthesis and heterocyclic building-block workflows. Monuo Chemical supplies this compound as a specialty chemical raw material under Custom synthesis, with batch identity documentation (COA / SDS). Finished-product claims, labeling and local regulatory filings remain the brand manufacturer’s responsibility. Confirm grade and assay against the batch COA for your intended method.
Synonyms & Search Names
- 1H-Pyrazole-1-carboxamidine hydrochloride
- 1-Amidinopyrazole hydrochloride
- Pyrazole-1-carboxamidine hydrochloride
- 1-Carbamimidoylpyrazole hydrochloride
- Praxadine hydrochloride
- CAS 4023-02-3
Applications
In specialty organic synthesis and medicinal-chemistry R&D projects, 1H-Pyrazole-1-carboxamidine hydrochloride is commonly reviewed for:
- Guanylation of sterically unhindered primary and secondary aliphatic amines under mild conditions
- Peptide synthesis and related amine functionalization workflows
- Pyrazole heterocycle building-block supply for custom synthesis and drug-discovery screening
- Catalog purchasing for specialty guanidine / heterocyclic intermediates
Compare related specialty items such as Methyl Oxalyl Chloride (CAS 5781-53-3) in the same Custom synthesis range.
Handling & Use Notes
- Assay check: Confirm specification / assay on the batch COA before use (catalog listing: 98%).
- Container handling: Keep sealed and dry; protect from unnecessary moisture and light during sampling.
- Process fit: Verify solubility and reactivity in water or your intended solvent / reaction system before scale-up.
- Safety: Follow the SDS for storage, PPE and waste handling. Use the batch SDS as the controlling safety document.
Need assay or packing discussion? Email [email protected] or use the contact form.
Packaging, Storage & Logistics
| Standard Pack Sizes | 50 g / 100 g bottles; 500 g / 1 kg packs (custom packing available) |
|---|---|
| Storage | Keep sealed, dry and protected from light and heat. Follow the batch COA and SDS |
| Shelf Life | Confirm shelf life on the COA for each lot |
| MOQ | Commercial MOQ discussed per project (often from 50 g); larger packs available on request |
| Lead Time | Stock items often ship promptly; custom pack / large lots typically 7–14 working days |
Quality & Documentation
For 1H-Pyrazole-1-carboxamidine hydrochloride (CAS 4023-02-3), Monuo Chemical can provide:
- Certificate of Analysis (COA)
- Technical Data Sheet (TDS) and Safety Data Sheet (SDS)
- CAS / product-name confirmation for your purchase file
- Flexible packing from grams to kilograms
- FOB / CIF / DAP terms as agreed
Our team aims to return technical data and quotations within 24 hours. See also Custom synthesis.
Request a Quote
Share your target assay, pack size and destination. We will confirm availability and documentation for 1H-Pyrazole-1-carboxamidine hydrochloride CAS 4023-02-3.
Request a Quote | Email: [email protected]
Frequently Asked Questions
What is 1H-Pyrazole-1-carboxamidine hydrochloride (CAS 4023-02-3)?
It is a pyrazole guanidine hydrochloride salt used as a guanylation reagent and heterocyclic building block. Monuo Chemical lists it under Custom synthesis. Match CAS 4023-02-3 on the batch COA.
Is 1-amidinopyrazole hydrochloride the same material?
Yes. 1-Amidinopyrazole hydrochloride and pyrazole-1-carboxamidine HCl are common catalog synonyms. Always put CAS 4023-02-3 on RFQs and POs.
What is the molecular formula and weight?
Listed values are molecular formula C4H7ClN4; molecular weight about 146.58 g/mol. Confirm on the batch COA/TDS.
Where is this reagent typically used?
Typical R&D uses include amine guanylation, peptide synthesis support and pyrazole heterocycle building-block supply. Finished-product claims remain the customer’s responsibility.
What specification do you supply?
A catalog listing for this CAS is 98%. Exact assay is confirmed on the Certificate of Analysis for each lot. Share your target grade when you request a quote.
How should 1H-Pyrazole-1-carboxamidine hydrochloride be stored?
Keep sealed, dry and protected from unnecessary light and heat. Follow the batch SDS and COA for controlling storage conditions.
How do I request a quotation for CAS 4023-02-3?
Share target assay, pack size and destination via the Request a Quote page or email [email protected]. We aim to reply within 24 hours.
Which related Custom synthesis products can I review?
You may also review 5-Vinylpyrrolidone (CAS 7529-16-0) and tert-Butylchlorodiphenylsilane (CAS 58479-61-1), or open the full Custom synthesis catalog.
Related Products
- 5-Vinylpyrrolidone (5-VP) (CAS 7529-16-0)
- Methyl Oxalyl Chloride (CAS 5781-53-3)
- tert-Butylchlorodiphenylsilane (CAS 58479-61-1)
- View all Custom synthesis
Disclaimer: Information is for specialty chemical raw-material identification and technical reference. Finished-product claims and regulatory filings remain the customer’s responsibility. Verify each lot against the supplied COA and SDS. Trade terms are FOB / CIF / DAP as agreed.
