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ChemicalBook >> CAS DataBase List >>7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro-

7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro-

7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro- Structure
7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro- structure
CAS No.
13877-55-9
Chemical Name:
7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro-
Synonyms
1,6-dihydro-7H-Pyrazolo[4,3-d]pyrimidin-7-one;7H-Pyrazolo[4,3-d]pyriMidin-7-one, 1,6-dihydro-;Nsc 79301;7-ketopyrazolo(4,3-d)pyrimidine;7H-Pyrazolo[4,3-d]pyrimidin-7-one;7-Hydroxypyrazolo[4,3-d]pyrimidine;1H-Pyrazolo(4,3-D)pyrimidine-7-one;1H-pyrazolo[4,3-d]pyrimidin-7(4H)-one;2H-pyrazolo[4,3-d]pyrimidin-7(6H)-one;1H-Pyrazolo(4,3-D)pyrimidin-7-ol (8ci)
CBNumber:
CB8156592
Molecular Formula:
C5H4N4O
Molecular Weight:
136.11
MDL Number:
MFCD18785745
MOL File:
13877-55-9.mol
MSDS File:
SDS
Last updated:2026-09-12 18:55:23
Request For Quotation

7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro- Properties

Melting point >30 °C(Solv: water (7732-18-5))
Boiling point 559.8±23.0 °C(Predicted)
Density 1.89±0.1 g/cm3(Predicted)
storage temp. 2-8°C
pka 10.66±0.20(Predicted)
Appearance Off-white to gray Solid
FDA UNII L69P3N2EVQ

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H319-H335-H302+H312+H332-H315
Precautionary statements  P280-P301+P312-P362+P364
HS Code  2933998090

7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro- price More Price(46)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Apolloscientific OR905295 7-Hydroxypyrazolo[4,3-d]pyrimidine >97% 13877-55-9 100mg $21 2026-06-04 Buy
Apolloscientific OR905295 7-Hydroxypyrazolo[4,3-d]pyrimidine >97% 13877-55-9 250mg $24 2026-06-04 Buy
Apolloscientific OR905295 7-Hydroxypyrazolo[4,3-d]pyrimidine >97% 13877-55-9 1g $36 2026-06-04 Buy
Apolloscientific OR905295 7-Hydroxypyrazolo[4,3-d]pyrimidine >97% 13877-55-9 5g $139 2026-06-04 Buy
Apolloscientific OR905295 7-Hydroxypyrazolo[4,3-d]pyrimidine >97% 13877-55-9 25g $693 2026-06-04 Buy
Product number Packaging Price Buy
OR905295 100mg $21 Buy
OR905295 250mg $24 Buy
OR905295 1g $36 Buy
OR905295 5g $139 Buy
OR905295 25g $693 Buy

7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro- Chemical Properties, Uses, Production

Synthesis

1-tert-Butyl 3-Methyl 4-aMino-1H-pyrazole-1,3-dicarboxylate

923283-63-0

Formamidine acetate

3473-63-0

7H-PYRAZOLO[4,3-D]PYRIMIDIN-7-ONE, 1,4-DIHYDRO-

13877-55-9

GENERAL STEPS: Formamidine acetate (40.3 mmol, 4.2 g) was added to a mixed solution of Hunig base (40 mL) and n-butanol (n-BuOH, 40 mL) containing 1-tert-butyl 3-methyl 4-amino-1H-pyrazole-1,3-dicarboxylic acid (26, 8.85 g, 36.7 mmol). The reaction mixture was heated with stirring at 110 °C for 1 hour. After completion of the reaction, it was cooled to room temperature and the precipitated solid product was collected. The solid was washed with dichloromethane and then dried under reduced pressure to afford 7-hydroxypyrazolo[4,3-D]pyrimidine (27, 4.46 g, 89% yield). The structure of the product was confirmed by electrospray mass spectrometry (ES(+)MS), m/e = 137.

References

[1] Patent: US2007/27166, 2007, A1. Location in patent: Page/Page column 84-85

7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro- synthesis

923283-63-0
3473-63-0
13877-55-9
Synthesis of 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro- from 1-tert-Butyl 3-Methyl 4-aMino-1H-pyrazole-1,3-dicarboxylate and Formamidine acetate

7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro- Preparation Products And Raw materials

Raw materials

1-tert-Butyl 3-Methyl 4-aMino-1H-pyrazole-1,3-dicarboxylate Formamidine acetate tert-Butanol N,N-Diisopropylethylamine

Preparation Products

7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro- Suppliers

Global Suppliers ( 88)
Supplier Tel Email Country ProdList Advantage
Pure Chemistry Scientific Inc. 001-857-928-2050 or 1-888-588-9418 sales@chemreagents.com United States 10174 62
Adamas Reagent, Ltd. 400-6009262 15618770481 yhx@titansci.com China 14098 59
9ding chemical ( Shanghai) Limited 4009209199 sales@9dingchem.com China 18201 56
Shanghai Carlow Chemicals Co., Ltd. 21-33526724 18930996265 info@carlowchem.com China 1996 58
Bide Pharmatech Ltd. 400-164-7117 18317119277 product02@bidepharm.com China 40000 60
Nantong MYBio-pharm. Co., Ltd. 0513-85921823 18662920231 sales@ntminyanmedical.com China 4563 58
Shanghai Worldyang Chemical Co.,Ltd. 021-56795766 sales@worldyachem.com China 9475 58
Shanghai YuYuan Pharmaceutical Co., Ltd. 13052276172 product@yuyuanpharm.com China 401 55
Jiaxing Novartis Chemical Co., Ltd. 18957373295 China 1579 58
Nanjing YiFan Biological Technology Co., Ltd. 025-025-52700520 18914499889 sales@yfbiotech.com China 494 58
Supplier Advantage
Pure Chemistry Scientific Inc. 62
Adamas Reagent, Ltd. 59
9ding chemical ( Shanghai) Limited 56
Shanghai Carlow Chemicals Co., Ltd. 58
Bide Pharmatech Ltd. 60
Nantong MYBio-pharm. Co., Ltd. 58
Shanghai Worldyang Chemical Co.,Ltd. 58
Shanghai YuYuan Pharmaceutical Co., Ltd. 55
Jiaxing Novartis Chemical Co., Ltd. 58
Nanjing YiFan Biological Technology Co., Ltd. 58

View Latest Price from 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro- manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
7H-PYRAZOLO[4,3-D]PYRIMIDIN-7-ONE, 1,4-DIHYDRO- pictures 2026-08-20 7H-PYRAZOLO[4,3-D]PYRIMIDIN-7-ONE, 1,4-DIHYDRO-
13877-55-9
 $1.10 1g 99.00% 100 Tons Min Dideu Industries Group Limited
7H-PYRAZOLO[4,3-D]PYRIMIDIN-7-ONE, 1,4-DIHYDRO- pictures 2021-07-13 7H-PYRAZOLO[4,3-D]PYRIMIDIN-7-ONE, 1,4-DIHYDRO-
13877-55-9
 $10.00-15.00 1KG 99%+ HPLC Zhuozhou Wenxi import and Export Co., Ltd
7H-PYRAZOLO[4,3-D]PYRIMIDIN-7-ONE, 1,4-DIHYDRO- pictures 2021-07-10 7H-PYRAZOLO[4,3-D]PYRIMIDIN-7-ONE, 1,4-DIHYDRO-
13877-55-9
 $10.00-15.00 1KG 99%+ HPLC Zhuozhou Wenxi import and Export Co., Ltd

7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro- Spectrum

7H-PYRAZOLO[4,3-D]PYRIMIDIN-7-ONE, 1,4-DIHYDRO-(13877-55-9)1HNMR

13877-55-9 (7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro-) Related Search:

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1of3

7-ketopyrazolo(4,3-d)pyrimidine 7H-Pyrazolo[4,3-d]pyrimidin-7-one 1,4-Dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one 7-Hydroxypyrazolo[4,3-d]pyrimidine 1H-Pyrazolo(4,3-D)pyrimidin-7-ol (8ci) 1H-Pyrazolo(4,3-D)pyrimidine-7-one Nsc 79301 7H-Pyrazolo[4,3-d]pyriMidin-7-one, 1,6-dihydro- 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro- (9CI) 7-Hydroxy-1H-pyrazolo[4,3-d]pyrimidine 1,6-Dihydro-pyrazolo[4,3-d]pyrimidin-7-one 1H,6H,7H-pyrazolo[4,3-d]pyrimidin-7-one 1H-pyrazolo[4,3-d]pyrimidin-7(4H)-one 1,4-dihydropyrazolo[4,3-d]pyrimidin-7-one 2H-pyrazolo[4,3-d]pyrimidin-7(6H)-one 1,6-dihydro-7H-Pyrazolo[4,3-d]pyrimidin-7-one 7H-PYRAZOLO[4,3-D]PYRIMIDIN-7-ONE, 1,4-DIHYDRO- ISO 9001：2015 REACH 2H,6H,7H-pyrazolo[4,3-d]pyrimidin-7-one 1,6-dihydro-7H-pyridineazolebenzo[4,3-d]pyrimidine-7-one 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,4-dihydro- 13877-55-9 PYRIMIDINE Heterocycle-Pyrimidine series