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5-Chloro-3-methylpyrazole

Product Name
5-Chloro-3-methylpyrazole
CAS No.
15953-45-4
Chemical Name
5-Chloro-3-methylpyrazole
Synonyms
5-CHLORO-3-METHYL-1H-PYRAZOLE;5-Chloro-3-methylpyrazole;3-Chloro-5-methylpyrazole;1H-Pyrazole, 3-chloro-5-methyl-;5-chloro-3-methyl-1H-pyrazole(SALTDATA: FREE)
CBNumber
CB6193599
Molecular Formula
C4H5ClN2
Formula Weight
116.55
MOL File
15953-45-4.mol
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5-Chloro-3-methylpyrazole Property

Melting point:
118.5°C
Boiling point:
180.5°C (rough estimate)
Density 
1.2115 (rough estimate)
refractive index 
1.5320 (estimate)
storage temp. 
under inert gas (nitrogen or Argon) at 2-8°C
pka
11.60±0.10(Predicted)
Appearance
White to off-white Solid
EPA Substance Registry System
1H-Pyrazole, 3-chloro-5-methyl- (15953-45-4)
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Safety

HazardClass 
IRRITANT
HS Code 
2933199090
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

TRC
Product number
C373443
Product name
5-chloro-3-methyl-1H-pyrazole
Packaging
1g
Price
$350
Updated
2021/12/16
Biosynth Carbosynth
Product number
FC151277
Product name
3-Chloro-5-methyl-1H-pyrazole
Packaging
100mg
Price
$54
Updated
2021/12/16
SynQuest Laboratories
Product number
3H32-5-AX
Product name
5-Chloro-3-methylpyrazole
Packaging
250mg
Price
$75
Updated
2021/12/16
Biosynth Carbosynth
Product number
FC151277
Product name
3-Chloro-5-methyl-1H-pyrazole
Packaging
250mg
Price
$107.5
Updated
2021/12/16
Apolloscientific
Product number
OR917576
Product name
5-Chloro-3-methylpyrazole
Purity
95%
Packaging
250mg
Price
$150
Updated
2021/12/16
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5-Chloro-3-methylpyrazole Chemical Properties,Usage,Production

Synthesis

54454-10-3

15953-45-4

General procedure for the synthesis of 5-chloro-3-methylpyrazole from 5-chloro-1,3-dimethyl-1H-pyrazole: (a) 5-chloro-1,3-dimethylpyrazole (2.6 mmol) and pyridine hydrochloride (13.1 mmol) were placed in a sealed 5 mL process vial, and the mixture was heated by microwave radiation for 2 hr at 200 °C. After completion of the reaction, it was cooled to room temperature, ethyl acetate (15 mL) was added, the mixture was washed sequentially with 2 M aqueous hydrochloric acid (10 mL) and saturated aqueous sodium chloride, dried over anhydrous magnesium sulphate and concentrated to give the title compound 5-chloro-3-methylpyrazole as a white solid (yield: 210 mg, 67%). Mass spectrometry (MS) showed molecular ion peak (M+H) m/z = 117. 1H-NMR (DMSO-d6, 400 MHz) data: δ 12.66 (broad single peak, 1H), 6.03 (multiple peaks, 1H), 2.19 (single peak, 3H).

References

[1] Patent: WO2007/45868, 2007, A1. Location in patent: Page/Page column 50
[2] Patent: WO2007/51981, 2007, A1. Location in patent: Page/Page column 47-48
[3] Patent: WO2006/32851, 2006, A1. Location in patent: Page/Page column 41-42
[4] Bioorganic and Medicinal Chemistry Letters, 2015, vol. 25, # 15, p. 3024 - 3029
[5] Patent: WO2008/129280, 2008, A1. Location in patent: Page/Page column 46

5-Chloro-3-methylpyrazole Preparation Products And Raw materials

Raw materials

Preparation Products

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5-Chloro-3-methylpyrazole Suppliers

China 63 Germany 1 India 1 Switzerland 1 The Netherlands 1 Ukraine 1 United Kingdom 1 United States 13 Global 82
Pure Chemistry Scientific Inc.
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001-857-928-2050 or 1-888-588-9418
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Alchem Pharmtech,Inc.
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Synthonix Inc
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Combi-Blocks Inc.
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SynQuest Laboratories, Inc.
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Matrix Scientific
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Wonda Science
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Anichem LLC
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American Custom Chemicals Corporation
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AlliChem, LLC
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View Lastest Price from 5-Chloro-3-methylpyrazole manufacturers

Career Henan Chemical Co
Product
5-Chloro-3-methylpyrazole 15953-45-4
Price
US $1.00/KG
Min. Order
1KG
Purity
95-99%
Supply Ability
1ton
Release date
2020-01-08

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  • 3-Chloro-5-methylpyrazole
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  • 5-chloro-3-methyl-1H-pyrazole(SALTDATA: FREE)
  • 15953-45-4