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1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester

1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester structure

CAS No.: 847818-70-6

Chemical Name:: 1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester

Synonyms: 1-Ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole;1-Ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole;1-Eth;1-Ethyl-1H-pyrazole-4-boronic acid, pina;1-Ethylpyrazole-4-boronic Acid Pinacol Ester;1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester;1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester;1-ethyl-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole;1-Ethylpyrazole-4-boronic acid pinacol ester - [E10401];1-ethyl-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

CBNumber:: CB11486453

Molecular Formula:: C11H19BN2O2

Molecular Weight:: 222.09

MDL Number:: MFCD09864188

MOL File:: 847818-70-6.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-05-27 23:09:11

Product description	Number	Pack Size	Price
1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester 97%	706205	250mg	$43.3
1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester 97%	706205	1g	$134
1-Ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole	E1348	1G	$54
1-Ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole	E1348	5G	$231
1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester >97%	OR17569	1g	$21
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1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester Properties

Melting point	44-49°C
Boiling point	322.6±15.0 °C(Predicted)
Density	1.04±0.1 g/cm3(Predicted)
refractive index	1.48
storage temp.	under inert gas (nitrogen or Argon) at 2-8°C
form	clear liquid
pka	2.11±0.10(Predicted)
color	Colorless to Almost colorless
InChI	InChI=1S/C11H19BN2O2/c1-6-14-8-9(7-13-14)12-15-10(2,3)11(4,5)16-12/h7-8H,6H2,1-5H3
InChIKey	UGCRHVPUHAXAAE-UHFFFAOYSA-N
SMILES	N1(CC)C=C(B2OC(C)(C)C(C)(C)O2)C=N1
CAS DataBase Reference	847818-70-6
UNSPSC Code	12352103
NACRES	NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS07

Signal word

Warning

Hazard statements

H315-H319-H335

Precautionary statements

P261-P264-P271-P280-P302+P352-P305+P351+P338

target organs

Respiratory system

PPE

dust mask type N95 (US), Eyeshields, Gloves

Hazard Codes

Risk Statements

36/37/38

Safety Statements

WGK Germany

HS Code

2933199090

Storage Class

11 - Combustible Solids

Hazard Classifications

Eye Irrit. 2
Skin Irrit. 2
STOT SE 3

NFPA 704

	1
2		0

1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester price More Price(65)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	706205	1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester 97%	847818-70-6	250mg	$43.3	2026-04-30	Buy
Sigma-Aldrich	706205	1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester 97%	847818-70-6	1g	$134	2026-04-30	Buy
TCI Chemical	E1348	1-Ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole	847818-70-6	1G	$54	2026-04-30	Buy
TCI Chemical	E1348	1-Ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole	847818-70-6	5G	$231	2025-07-31	Buy
Apolloscientific	OR17569	1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester >97%	847818-70-6	1g	$21	2026-06-04	Buy

Product number	Packaging	Price	Buy
706205	250mg	$43.3	Buy
706205	1g	$134	Buy
E1348	1G	$54	Buy
E1348	5G	$231	Buy
OR17569	1g	$21	Buy

1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester Chemical Properties,Uses,Production

Synthesis

269410-08-4

75-03-6

1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester

847818-70-6

To a solution of N,N-dimethylformamide (DMF, 10 mL) of 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (1.0 g, 5.2 mmol) was added cesium carbonate (2.5 g, 7.7 mmol) and ethyl iodide (1.2 mL, 15 mmol). The reaction mixture was stirred at room temperature for 12 hours. After the reaction was completed, the reaction mixture was diluted with water (30 mL). The aqueous phase was extracted with dichloromethane (DCM, 30 mL x 3). The organic layers were combined and dried over anhydrous sodium sulfate (Na2SO4) and subsequently concentrated under reduced pressure. The residue was purified by silica gel column chromatography using petroleum ether (PE)/ethyl acetate (EtOAc) (2:1, v/v) as eluent to afford the colorless oily product 1-ethyl-1H-pyrazole-4-boronic acid pinacol ester (880 mg, 77% yield). Mass spectrometric (MS) analysis (electrospray ionization, cation mode) showed m/z: 223.25 [M + 1]+.

References

[1] Patent: WO2016/615, 2016, A1. Location in patent: Paragraph 00655
[2] Patent: EP1798229, 2007, A1. Location in patent: Page/Page column 130
[3] Patent: US2010/240634, 2010, A1. Location in patent: Page/Page column 67-68
[4] Patent: WO2018/102452, 2018, A2. Location in patent: Paragraph 425; 426
[5] Bioorganic and Medicinal Chemistry Letters, 2008, vol. 18, # 19, p. 5299 - 5302

1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester Preparation Products And Raw materials

Raw materials

Bis(pinacolato)diboron 4-Pyrazoleboronic acid pinacol ester 1-Azetidinecarboxylic acid, 3-[4-[6-[(6-methyl-1,2,4-triazolo[4,3-b]pyridazin-3-yl)thio]-3-quinolinyl]-1H-pyrazol-1-yl]-, 1,1-dimethylethyl ester Iodoethane 4-Bromo-1-ethyl-1H-pyrazole

Cesium carbonate N,N-Dimethylformamide

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Preparation Products

4-(4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)-1-(2,2,2-trifluoroethyl)-1H-pyrazole

1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester Suppliers

Global( 144)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Capot Chemical Co.,Ltd.	+86-（0）57185586718 +86-13336195806	sales@capot.com	China	29640	60
ATK CHEMICAL COMPANY LIMITED	+undefined-21-51877795	ivan@atkchemical.com	China	33024	60
career henan chemical co	+86-0371-86658258 +8613203830695	sales@coreychem.com	China	29815	58
Accela ChemBio Inc.	+1-858-6993322	info@accelachem.com	United States	21193	58
Alchem Pharmtech,Inc.	8485655694	sales@alchempharmtech.com	United States	63687	58
Wuhan Chemwish Technology Co., Ltd	027-67849912	sales@chemwish.com	CHINA	10821	58
Fuxin Pharmaceutical	+86-021-021-50872116 +8613122107989	contact@fuxinpharm.com	China	10000	58
Antai Fine Chemical Technology Co.,Limited	18503026267	info@antaichem.com	CHINA	9636	58
Guangzhou Yuheng Pharmaceutical Technology Co., Ltd	+8613580539051	joe@yuhengpharm.com	CHINA	21142	58
Chengdu Aslee Biopharmaceuticals, Inc.	28-85305008		CHINA	964	58

Supplier	Advantage
Capot Chemical Co.,Ltd.	60
ATK CHEMICAL COMPANY LIMITED	60
career henan chemical co	58
Accela ChemBio Inc.	58
Alchem Pharmtech,Inc.	58
Wuhan Chemwish Technology Co., Ltd	58
Fuxin Pharmaceutical	58
Antai Fine Chemical Technology Co.,Limited	58
Guangzhou Yuheng Pharmaceutical Technology Co., Ltd	58
Chengdu Aslee Biopharmaceuticals, Inc.	58

View Lastest Price from 1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2021-07-13	1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester 847818-70-6	$10.00-15.00	1KG	99%+ HPLC		Zhuozhou Wenxi import and Export Co., Ltd
2021-07-10	1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester 847818-70-6	$10.00-15.00	1KG	99%+ HPLC		Zhuozhou Wenxi import and Export Co., Ltd
2019-07-06	1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester 847818-70-6	$1.00	1KG	98%-100%	1	Career Henan Chemical Co

1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester
847818-70-6
$10.00-15.00
99%+ HPLC
Zhuozhou Wenxi import and Export Co., Ltd

1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester
847818-70-6
$10.00-15.00
99%+ HPLC
Zhuozhou Wenxi import and Export Co., Ltd

1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester
847818-70-6
$1.00
98%-100%
Career Henan Chemical Co

1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester Spectrum

1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester(847818-70-6)¹HNMR

847818-70-6(1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester)Related Search:

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1H-PYRAZOLE-4-BORONIC ACID 1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester 4-(4,4,5,5-TETRAMETHYL-[1,3,2]DIOXABOROLAN-2-YL)-1-THIOPHEN-2-YLMETHYL-1H-PYRAZOLE 2-[4-(4,4,5,5-TETRAMETHYL-[1,3,2]DIOXABOROLAN-2-YL)-PYRAZOL-1-YLMETHYL]-PYRIDINE 3-[4-(4,4,5,5-TETRAMETHYL-[1,3,2]DIOXABOROLAN-2-YL)-PYRAZOL-1-YLMETHYL]-PYRIDINE

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1-(2-MORPHOLINOETHYL)-1H-PYRAZOLE-4-BORONIC ACID, PINACOL ESTER 1-(2,2-DIMETHOXY-ETHYL)-4-(4,4,5,5-TETRAMETHYL-[1,3,2]DIOXABOROLAN-2-YL)-1H-PYRAZOLE 1-[1,3]DIOXOLAN-2-YLMETHYL-4-(4,4,5,5-TETRAMETHYL-[1,3,2]DIOXABOROLAN-2-YL)-1H-PYRAZOLE

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1-ethyl-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole 1-Ethyl-1H-pyrazole-4-boronic acid, pinacol ester 3-hydroxy-2,3-dimethylbutan-2-yl hydrogen (1-ethyl-1H-pyrazol-4-yl)boronate 1-Ethylpyrazole-4-boronic Acid Pinacol Ester 1H-Pyrazole, 1-ethyl-4-(4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)- 1-Eth 2-(1-Ethyl-1H-pyrazol-4yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 1-Ethyl-1H-pyrazole-4-boronic acid, pina 1-ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-p... 1-ethyl-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole 1-Ethyl-1H-pyrazole-4-boronic acid pinacol ester 1-Ethylpyrazole-4-boronic acid pinacol ester - [E10401] 1-Ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole 1-Ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole 847818-70-6 C11H21BN2O3

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