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1H-Pyrazole-1-carboxamidine hydrochloride

CAS No.
4023-02-3
Chemical Name:
1H-Pyrazole-1-carboxamidine hydrochloride
Synonyms
1H-pyrazole-1-carboximidamide;1-AMIDINOPYRAZOLE HYDROCHLORIDE;Praxadine;1H-pyrazole-1-carboxamidine;PYRAZOLE-1-CARBOXAMIDINE;Zanamivir EP Impurity F;Pyrazole-1-carboxamidine Hydrochloride;1H-PYRAZOLE-1-CARBOXAMIDINE MONOHYDROCHLORIDE;N-GUANYLPYRAZOLE;AMIDINOPYRAZOLE HCL
CBNumber:
CB9707005
Molecular Formula:
C4H7ClN4
Molecular Weight:
146.58
MDL Number:
MFCD00210087
MOL File:
4023-02-3.mol
MSDS File:
SDS
Last updated:2025-07-24 18:13:46

1H-Pyrazole-1-carboxamidine hydrochloride Properties

Melting point 167-170 °C(lit.)
storage temp. Inert atmosphere,Room Temperature
form Crystals or Crystalline Powder
color White to light yellow
Water Solubility Soluble
BRN 5448758
InChI InChI=1S/C4H6N4.ClH/c5-4(6)8-3-1-2-7-8;/h1-3H,(H3,5,6);1H
InChIKey RBZRMBCLZMEYEH-UHFFFAOYSA-N
SMILES N1(C(N)=N)C=CC=N1.[H]Cl
CAS DataBase Reference 4023-02-3(CAS DataBase Reference)
FDA UNII 12L58GX4AS
UNSPSC Code 41116107
NACRES NA.24

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
GHS05,GHS07,GHS08
Signal word  Danger
Hazard statements  H302-H317-H318-H335-H373-H412
Precautionary statements  P273-P280-P301+P312-P302+P352-P305+P351+P338-P314
Hazard Codes  Xi,C
Risk Statements  36/37/38-36/37-34
Safety Statements  26-37/39-45-36/37/39
WGK Germany  3
10-21
HS Code  29339900
NFPA 704
1
2 0

1H-Pyrazole-1-carboxamidine hydrochloride price More Price(48)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 402516 1H-Pyrazole-1-carboxamidine hydrochloride 99% 4023-02-3 10g $52.84 2025-07-31 Buy
Sigma-Aldrich Y0001703 Zanamivir impurity F European Pharmacopoeia (EP) Reference Standard 4023-02-3 10 mg $118 2025-07-31 Buy
Sigma-Aldrich 402516 1H-Pyrazole-1-carboxamidine hydrochloride 99% 4023-02-3 50g $204 2025-07-31 Buy
TCI Chemical A2055 1-Amidinopyrazole Hydrochloride >98.0%(HPLC)(T) 4023-02-3 5g $31 2025-07-31 Buy
TCI Chemical A2055 1-Amidinopyrazole Hydrochloride >98.0%(HPLC)(T) 4023-02-3 25g $83 2025-07-31 Buy
Product number Packaging Price Buy
402516 10g $52.84 Buy
Y0001703 10 mg $118 Buy
402516 50g $204 Buy
A2055 5g $31 Buy
A2055 25g $83 Buy

1H-Pyrazole-1-carboxamidine hydrochloride Chemical Properties,Uses,Production

Chemical Properties

white to light yellow crystals or crystalline

Uses

1H-Pyrazole-1-carboxamidine hydrochloride is a stable and versatile reagent for the efficient and chemically specific guanylation of sterically unhindered primary and secondary aliphatic amines under mild conditions. 1H-Pyrazole-1-carboxamidine hydrochloride is a useful reagent in peptide synthesis

Uses

1H-Pyrazole-1-carboxamidine hydrochloride may be used in the following studies: ? Preparation of guanidylated hollow fiber membranes. ? Guanylation of amines and in peptide synthesis. ? Synthesis of bis-guanidinium-cholesterol derivatives.

General Description

1H-Pyrazole-1-carboxamidine hydrochloride, a pyrazole derivative, is a heterocyclic compound. It is widely used in drug syntheses studies. Pyrazole ring forms the main core of various nonsteroidal anti-inflammatory drugs (NSAIDs) and antihypertensive drugs.

Synthesis

Pyrazole

288-13-1

Cyanamide

420-04-2

1H-Pyrazole-1-carboxamidine hydrochloride

4023-02-3

Pyrazole (1.634 g, 24 mmol) and cyanamide (1 g, 24 mmol) were dissolved in 1,4-dioxane (24 mL), followed by the addition of 4 M hydrochloric acid (6 mL) to the 1,4-dioxane solution. The reaction mixture was stirred under reflux conditions for 1 hour. Upon completion of the reaction, the reaction mixture was placed in an ice-water bath and the product was induced to recrystallize by the addition of ether. The yield of the final product was 43%.

References

[1] Journal of Organic Chemistry, 1992, vol. 57, # 8, p. 2497 - 2502
[2] Organic Letters, 2004, vol. 6, # 26, p. 4925 - 4927
[3] Patent: KR101808950, 2017, B1. Location in patent: Paragraph 0233-0236
[4] Bioorganic and Medicinal Chemistry Letters, 2000, vol. 10, # 24, p. 2771 - 2774
[5] Journal of Medicinal Chemistry, 2005, vol. 48, # 3, p. 812 - 820

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View Lastest Price from 1H-Pyrazole-1-carboxamidine hydrochloride manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
1H-Pyrazole-1-carboxamidine hydrochloride pictures 2025-07-07 1H-Pyrazole-1-carboxamidine hydrochloride
4023-02-3
US $100.00 / kg 1kg 99% 5000KG Hebei Mujin Biotechnology Co.,Ltd
1H-Pyrazole-1-carboxamidine hydrochloride pictures 2025-06-24 1H-Pyrazole-1-carboxamidine hydrochloride
4023-02-3
US $1.00 / KG 1KG 99% 10 mt Hebei Chuanghai Biotechnology Co., Ltd
1H-Pyrazole-1-carboxamidine hydrochloride pictures 2025-04-04 1H-Pyrazole-1-carboxamidine hydrochloride
4023-02-3
US $0.00-0.00 / KG 1KG 98% 1ton Henan Aochuang Chemical Co.,Ltd.
1H-PYRAZOLE-1-CARBOXAMIDINE HYDROCHLORIDE 1H-PYRAZOLE-1-CARBAMIDINE HCL 1-AMIDINOPYRAZOLE MONOHYDROCHLORIDE PYRAZOLE CARBOXAMIDINE HCL 1H-Pyrazole-1-carboxaMidine Monohydrochloride, 99% 10GR 1H-Pyrazole-1-carboxaMidine Monohydrochloride, 99% 50GR AMIDINOPYRAZOLE HCL Praxadine 1-Pyrazolecarboxamidine Hydrochloride Pyrazole-1-benzaMidineHCl 1H-Pyrazole-1-carboxaMidine hydrochloride 99% 1 h - pyrazole - 1 - a aMidine hydrochloride 1H-Pyrazole-1-carboxamidine hydrochloride 1-Amidinopyrazole hydrochloride 1H-Pyrazole-1-carboximidamide HCl 1H-Pyrazole-1-carboximidamide hydrochloride, 1-Carbamimidoyl-1H-pyrazole hydrochloride Zanamivir impurity F TIMTEC-BB SBB004101 (1H)-Pyrazole-1-carboxamidineHCl N-GUANYLPYRAZOLE PRAXADINE HYDROCHLORIDE Zanamivir Intermediate 1 monohydrochloride 1-Pyrazolecarboxamidine Hydrochloride 1H-Pyrazole-1-carboxamidine hydrochloride ,99% 1H-Pyrazole-1-carboxamidine hydrochloride,1-Amidinopyrazole hydrochloride, Praxadine 1H-Pyrazole-1-carboxamidine monohydrochloride,99% 1h-pyrazole-1-carboxamidehydrochloride 1H-Pyrazole-carboxamidineHCl 1H-PYRAZOLE-1-CARBOXIMIDAMIDEHYDROCHLORIDE 1H-Pyrazole-1-carboximidamidemonohydrochloride 1H-PYRAZOLE-1-CARBOXAMIDINE, HYDROCHLORIDE 98+% 1H-PYRAZOLE-1-CARBAMIDINE HCI 1-Pyrazolecarboxamidine Hydrochloride 1-Amidinopyrazole hydrochloride, Praxadine 1H-Pyrazole-1-carboximidamide,hydrochloride (1:1) 1-AMIDINOPYRAZOLE MONOHYDROCHL 1-Carbamimidoylpyrazole Hydrochloride e-1-carboxamidine hydrochL Zanamivir impurity F CRS 1-Amidinopyrazole Hydrochloride > Zanamivir Impurity 6(Zanamivir EP Impurity F) Pyrazole-1-carboximidamide Hydrochloride 1H-Pyrazole-1-carboxamidine hydrochloride ISO 9001:2015 REACH 1H-pyrazol-1-ium-1-carboximidamide TIANFUCHEM--4023-02-3--1H-Pyrazole-1-carboxamidine hydrochloride factory price 1H-PYRAZOLE-1-CARBOXAMIDINE MONOHYDROCHLORIDE 1-AMIDINOPYRAZOLE HYDROCHLORIDE Praxadine PYRAZOLE-1-CARBOXAMIDINE Pyrazole-1-carboxamidine Hydrochloride 1H-pyrazole-1-carboximidamide 1H-pyrazole-1-carboxamidine Zanamivir EP Impurity F 1H-Pyrazole-1-methylamidine hydrochloride 1-H-Pyrazol-1-carboxamidine hydrochloride 1H-Pyrazole-1-carboximidamide hydrochloride (Zanamivir Impurity) Zanamivir EP Impurity F(HCl) pyrazole-1-carboxamidine monohydrochloride 1H-Pyrazole-1-carboxamidine hydrochloride 4023-02-3