4-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidine

Modify Date: 2025-08-25 14:13:30

4-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidine Structure
4-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidine structure
 Common Name 4-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidine
CAS Number 23000-43-3 Molecular Weight 168.584
Density 1.6±0.1 g/cm3 Boiling Point 294.6±20.0 °C at 760 mmHg
Molecular Formula C6H5ClN4 Melting Point 102-104ºC
MSDS N/A Flash Point 132.0±21.8 °C

 Names

Name 4-chloro-1-methylpyrazolo[3,4-d]pyrimidine
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.6±0.1 g/cm3
Boiling Point 294.6±20.0 °C at 760 mmHg
Melting Point 102-104ºC
Molecular Formula C6H5ClN4
Molecular Weight 168.584
Flash Point 132.0±21.8 °C
Exact Mass 168.020279
PSA 43.60000
LogP 0.16
Vapour Pressure 0.0±0.6 mmHg at 25°C
Index of Refraction 1.743

 Safety Information

HS Code 2933990090

 Synthetic Route

4,6-Dichloro-5-pyrimidinecarbaldehyde structure

4,6-Dichloro-5-...

CAS#:5305-40-8

monomethylhydrazine structure

monomethylhydrazine

CAS#:60-34-4

~92%

4-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidine Structure

4-Chloro-1-meth...

CAS#:23000-43-3

Literature: Morrill, Christie; Babu, Suresh; Almstead, Neilg.; Moon, Young-Choon Synthesis (Germany), 2013 , vol. 45, # 13 art. no. SS-2013-C0248-OP, p. 1791 - 1806
1-METHYL-1,5-DIHYDRO-4H-PYRAZOLO[3,4-D]PYRIMIDIN-4-ONE structure

1-METHYL-1,5-DI...

CAS#:5334-56-5

~62%

4-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidine Structure

4-Chloro-1-meth...

CAS#:23000-43-3

Literature: E. R. Squibb and Sons, Inc. Patent: US4124764 A1, 1978 ;
6-Chloropurine structure

6-Chloropurine

CAS#:5399-92-8

methyl iodide structure

methyl iodide

CAS#:74-88-4

~65%

4-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidine Structure

4-Chloro-1-meth...

CAS#:23000-43-3

4-Chloro-2-methyl-2H-pyrazolo[3,4-d]pyrimidine structure

4-Chloro-2-meth...

CAS#:959430-67-2

Literature: US2007/281949 A1, ; Page/Page column 37 ;
methyl-Hydrazine, hydrochloride structure

methyl-Hydrazin...

CAS#:7339-53-9

4,6-Dichloro-5-pyrimidinecarbaldehyde structure

4,6-Dichloro-5-...

CAS#:5305-40-8

~92%

4-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidine Structure

4-Chloro-1-meth...

CAS#:23000-43-3

Literature: Babu, Suresh; Morrill, Christie; Almstead, Neil G.; Moon, Young-Choon Organic Letters, 2013 , vol. 15, # 8 p. 1882 - 1885
1H-Pyrazolo[3,4-d]pyrimidine, 1-methyl- structure

1H-Pyrazolo[3,4...

CAS#:6288-86-4

~94%

4-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidine Structure

4-Chloro-1-meth...

CAS#:23000-43-3

Literature: Miyashita, Akira; Suzuki, Yumiko; Ohta, Kiyono; Higashino, Takeo Heterocycles, 1994 , vol. 39, # 1 p. 345 - 356

 Customs

HS Code 2933990090
Summary 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

4-Chloro-1-methyl-1H-pyrazolo<3.4-d>pyrimidin
4-Chloro-1-methylpyrazolo[3,4-d]pyrimidine
4-Chlor-1-methyl-1H-pyrazolo[3,4-d]pyrimidin
1H-Pyrazolo[3,4-d]pyrimidine, 4-chloro-1-methyl-
4-chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidine
4-chloro-1-methylpyrazolo[5,4-d]pyrimidine
1-Methyl-4-chloropyrazolo[3,4-d]pyrimidine
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Chemsrc provides CAS#:23000-43-3 MSDS, density, melting point, boiling point, structure, etc. Its name is 4-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidine>> amp version: 4-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidine

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