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PYRAZOLO[1,5-A]PYRIMIDINE

PYRAZOLO[1,5-A]PYRIMIDINE structure

CAS No.: 274-71-5

Chemical Name:: PYRAZOLO[1,5-A]PYRIMIDINE

Synonyms: pyrazolo[2,3-a]pyrimidine;PYRAZOLO[1,5-A]PYRIMIDINE;Pyrazolo[1,5-a]pyrimidine (8CI, 9CI, ACI)

CBNumber:: CB52454983

Molecular Formula:: C6H5N3

Molecular Weight:: 119.12

MDL Number:: MFCD10699580

MOL File:: 274-71-5.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-06-30 17:22:44

Product description	Number	Pack Size	Price
Pyrazolo[1,5-a]pyrimidine >98%	OR301222	250mg	$21
Pyrazolo[1,5-a]pyrimidine >98%	OR301222	1g	$32
Pyrazolo[1,5-a]pyrimidine >98%	OR301222	5g	$139
Pyrazolo[1,5-a]pyrimidine >98%	OR301222	25g	$690
Pyrazolo[1,5-a]pyrimidine 98%	AS12030	1g	$48
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PYRAZOLO[1,5-A]PYRIMIDINE Properties

Melting point	105 °C
Density	1.29±0.1 g/cm3(Predicted)
storage temp.	Sealed in dry,Room Temperature
pka	0.33±0.30(Predicted)
Appearance	White to off-white Solid
FDA UNII	NX2KR7M4A4

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H302-H315-H319-H335
Precautionary statements	P261-P280-P301+P312-P302+P352-P305+P351+P338
Risk Statements	20/21/22
Safety Statements	36/37
HS Code	29335990

PYRAZOLO[1,5-A]PYRIMIDINE price More Price(31)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Apolloscientific	OR301222	Pyrazolo[1,5-a]pyrimidine >98%	274-71-5	250mg	$21	2026-06-04	Buy
Apolloscientific	OR301222	Pyrazolo[1,5-a]pyrimidine >98%	274-71-5	1g	$32	2026-06-04	Buy
Apolloscientific	OR301222	Pyrazolo[1,5-a]pyrimidine >98%	274-71-5	5g	$139	2026-06-04	Buy
Apolloscientific	OR301222	Pyrazolo[1,5-a]pyrimidine >98%	274-71-5	25g	$690	2026-06-04	Buy
Activate Scientific	AS12030	Pyrazolo[1,5-a]pyrimidine 98%	274-71-5	1g	$48	2026-06-04	Buy

Product number	Packaging	Price	Buy
OR301222	250mg	$21	Buy
OR301222	1g	$32	Buy
OR301222	5g	$139	Buy
OR301222	25g	$690	Buy
AS12030	1g	$48	Buy

PYRAZOLO[1,5-A]PYRIMIDINE Chemical Properties,Uses,Production

Chemical Properties

Light yellow solid

Uses

Pyrazolo[1,5-a]pyrimidine is being researched as a protein kinase CK2 inhibitors.

Synthesis

1820-80-0

927-63-9

274-71-5

Preparation of compound 23a: 1H-pyrazol-3-ylamine (32 g, 0.386 mol) and (E)-3-dimethylaminoacrylaldehyde (38.2 g, 0.386 mol) were dissolved in ethanol (500 mL), and the reaction was carried out at reflux for 6 hours. After completion of the reaction, the solvent was removed by distillation under reduced pressure and the resulting residue was purified by column chromatography (eluent: petroleum ether/ethyl acetate = 10:1 to 2:1) to afford the target product, pyrazolo[1,5-a]pyrimidine 23a, as a white solid (30 g, 65% yield).

References

[1] Synthesis, 2006, # 1, p. 59 - 62
[2] Patent: WO2010/16005, 2010, A1. Location in patent: Page/Page column 116

PYRAZOLO[1,5-A]PYRIMIDINE Preparation Products And Raw materials

Raw materials

3-Aminopyrazole 3-Dimethylaminoacrolein

Preparation Products

3-BROMO-PYRAZOLO[1,5-A]PYRIMIDINE

PYRAZOLO[1,5-A]PYRIMIDINE Suppliers

Global( 87)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
career henan chemical co	+86-0371-86658258	sales@coreychem.com	China	29766	58
HaBo Hong Kong Co., Limited.	+86-25-18512596065	info@habotech.com	CHINA	931	58
Alchem Pharmtech,Inc.	8485655694	sales@alchempharmtech.com	United States	63645	58
CONIER CHEM AND PHARMA LIMITED		sales@conier.com	China	49906	58
Guangzhou Yuheng Pharmaceutical Technology Co., Ltd	+8613580539051	joe@yuhengpharm.com	CHINA	21135	58
Neostar United (Changzhou) Industrial Co., Ltd.	+86-0519-85551759	marketing1@neostarunited.com	China	8827	58
Shanghai Rlavie Technology Co ltd	+86-021-67759270 +86-17717059219	sales@rlavie.com	China	1030	58
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418671 +86-189 4982 3763	sales@tnjchem.com	China	34526	58
Dayang Chem (Hangzhou) Co.,Ltd.	+86-0571-88938639 17705817739	info@dycnchem.com	China	52693	58
Nantong HI-FUTURE Biology Co., Ltd.	+86-18051384581	sales@chemhifuture.com	China	3123	58

Supplier	Advantage
career henan chemical co	58
HaBo Hong Kong Co., Limited.	58
Alchem Pharmtech,Inc.	58
CONIER CHEM AND PHARMA LIMITED	58
Guangzhou Yuheng Pharmaceutical Technology Co., Ltd	58
Neostar United (Changzhou) Industrial Co., Ltd.	58
Shanghai Rlavie Technology Co ltd	58
Hefei TNJ Chemical Industry Co.,Ltd.	58
Dayang Chem (Hangzhou) Co.,Ltd.	58
Nantong HI-FUTURE Biology Co., Ltd.	58

View Lastest Price from PYRAZOLO[1,5-A]PYRIMIDINE manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-06-30	PYRAZOLO[1,5-A]PYRIMIDINE 274-71-5		1KG	98%	20Tons	Shaanxi Dideu New Materials Co. Ltd
2022-09-12	Pyrazolo[1,5-a]pyrimidine 274-71-5		1G	98%min	50kg/month	Shanghai Rlavie Technology Co ltd
2019-07-06	PYRAZOLO[1,5-A]PYRIMIDINE 274-71-5	$1.00	1kg	98%	200kg	Career Henan Chemical Co

PYRAZOLO[1,5-A]PYRIMIDINE
274-71-5
98%
Shaanxi Dideu New Materials Co. Ltd

Pyrazolo[1,5-a]pyrimidine
274-71-5
98%min
Shanghai Rlavie Technology Co ltd

PYRAZOLO[1,5-A]PYRIMIDINE
274-71-5
$1.00
98%
Career Henan Chemical Co

PYRAZOLO[1,5-A]PYRIMIDINE Spectrum

PYRAZOLO[1,5-A]PYRIMIDINE(274-71-5)¹HNMR

274-71-5(PYRAZOLO[1,5-A]PYRIMIDINE)Related Search:

PYRAZOLO[1,5-A]PYRIMIDINE-5-CARBOXYLICACID PYRAZOLO[1,5-A]PYRIDIN-2-OL 5-Hydroxypyrazolo[1,5-a]pyrimidine PYRAZOLO[1,5-A]PYRIMIDINE-3-CARBOXYLIC ACID ETHYL ESTER PYRAZOLO[1,5-A]PYRIMIDINE-3-CARBONITRILE

C-PYRAZOLO[1,5-A]PYRIDIN-7-YL-METHYLAMINE Pyrazolo[1,5-a]pyridine PYRAZOLO[1,5-A]PYRIDINE-2-CARBOXYLIC ACID AMIDE Pyrazolam 1H-Pyrrolo[2,3-c]pyridin-7-amine(9CI)

4,7-DIMETHYLPYRAZOLO(1,5-A)PYRIMIDINE-3-CARBOXYLIC ACID PYRAZOPHOS 1-[2-(4-CHLOROPHENYL)-7-METHYLPYRAZOLO[1,5-A]PYRIMIDIN-6-YL]ETHAN-1-ONE 6-(TERT-BUTYLSULFONYL)-2-METHYLPYRAZOLO[1,5-A]PYRIMIDIN-7-AMINE 7-Aminopyrazolo[1,5-a]pyrimidine-6-carbonitrile

ETHYL 7-METHYL-2-(2-THIENYL)PYRAZOLO[1,5-A]PYRIMIDINE-6-CARBOXYLATE 7-PHENYLPYRAZOLO[1,5-A]PYRIMIDINE-3-CARBONITRILE ETHYL 7-METHYL-2-PHENYLPYRAZOLO[1,5-A]PYRIMIDINE-6-CARBOXYLATE

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PYRAZOLO[1,5-A]PYRIMIDINE pyrazolo[2,3-a]pyrimidine Pyrazolo[1,5-a]pyrimidine (8CI, 9CI, ACI) 274-71-5