ChemicalBook > CAS DataBase List > (1H-PYRAZOL-4-YL)METHANOL

(1H-PYRAZOL-4-YL)METHANOL

Product Name
(1H-PYRAZOL-4-YL)METHANOL
CAS No.
25222-43-9
Chemical Name
(1H-PYRAZOL-4-YL)METHANOL
Synonyms
Pyrazole-4-methanol;1H-Pyrazole-4-Methanol;4-(HYDROXYMETHYL)PYRAZOLE;(1H-PYRAZOL-4-YL)METHANOL;4-HyroxyMethyl-1H-pyrazole;4-Hyroxymethyl-1H-pyrazol...;(1H-Pyrazol-4-Yl)Methanol(WX640336)
CBNumber
CB0301963
Molecular Formula
C4H6N2O
Formula Weight
98.1
MOL File
25222-43-9.mol
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(1H-PYRAZOL-4-YL)METHANOL Property

Boiling point:
326.8±17.0 °C(Predicted)
Density 
1.311±0.06 g/cm3(Predicted)
storage temp. 
Sealed in dry,Room Temperature
solubility 
Soluble in DMSO
pka
13.78±0.50(Predicted)
form 
Solid
color 
White to off-white
InChI
InChI=1S/C4H6N2O/c7-3-4-1-5-6-2-4/h1-2,7H,3H2,(H,5,6)
InChIKey
JRMKJOOJKCAEJK-UHFFFAOYSA-N
SMILES
N1C=C(CO)C=N1
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Safety

HS Code 
2933199090
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

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
B529775
Product name
(1H-Pyrazol-4-yl)methanol
Packaging
100mg
Price
$60
Updated
2021/12/16
Ark Pharm
Product number
P000724503
Product name
(1H-Pyrazol-4-yl)methanol
Purity
97%
Packaging
100mg
Price
$12
Updated
2021/12/16
Ark Pharm
Product number
P000724503
Product name
(1H-Pyrazol-4-yl)methanol
Purity
97%
Packaging
250mg
Price
$19
Updated
2021/12/16
ApexBio Technology
Product number
C6614
Product name
4-Hydroxymethylpyrazole
Packaging
100mg
Price
$55
Updated
2021/12/16
Ark Pharm
Product number
P000724503
Product name
(1H-Pyrazol-4-yl)methanol
Purity
97%
Packaging
1g
Price
$58
Updated
2021/12/16
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(1H-PYRAZOL-4-YL)METHANOL Chemical Properties,Usage,Production

Uses

Callistephin (chloride) (Standard) is the analytical standard of Callistephin (chloride). This product is intended for research and analytical applications. Callistephin (Pelargonidin 3-O-glucoside) chloride is an anthocyanin that can be found in strawberries and chokeberries.

Definition

ChEBI: 4-Hydroxymethylpyrazole is a member of pyrazoles.

Synthesis

37622-90-5

25222-43-9

In a flame-dried round-bottom flask (RBF), a suspension of lithium aluminum hydride (LAH, 45.2 mL, 45.2 mmol, 1 M in tetrahydrofuran (THF)) was cooled to 0°C. Subsequently, a solution of ethyl 1H-pyrazole-4-carboxylate (3.17 g, 22.6 mmol) dissolved in THF (20 mL) was added slowly and dropwise. The reaction mixture was gradually warmed to room temperature and stirred overnight at room temperature. Upon completion of the reaction, the mixture was cooled in an ice bath and 1.36 mL of water and 10 mL of 1 M sodium hydroxide (NaOH) solution were added sequentially dropwise to carefully quench the reaction, followed by stirring for 20 min. Solid magnesium sulfate (MgSO4) was added to dry the reaction mixture, and stirring was continued at room temperature for 30 min after removal of the ice bath. The solids were removed by filtration through diatomaceous earth (CELITE) and the filter cake was washed with THF and methanol (MeOH), respectively. The filtrates were combined and evaporated to give the target product (1H-pyrazol-4-yl) methanol (1.75 g, 78.9% yield) as a white solid. The product was confirmed by nuclear magnetic resonance hydrogen spectroscopy (1H NMR, 500 MHz, DMSO-d6): δ 12.58 (broad single peak, 1H), 7.58 (single peak, 1H), 7.40 (single peak, 1H), 4.74 (triple peak, J = 5.5 Hz, 1H), 4.37 (double peak, J = 5.2 Hz, 2H).

References

[1] Patent: WO2017/40449, 2017, A1. Location in patent: Paragraph 00176
[2] Patent: WO2011/121555, 2011, A1. Location in patent: Page/Page column 206
[3] Patent: US2013/96119, 2013, A1. Location in patent: Paragraph 1626; 1627
[4] Journal of the American Chemical Society, 1949, vol. 71, p. 4000
[5] Patent: WO2006/74925, 2006, A1. Location in patent: Page/Page column 48

(1H-PYRAZOL-4-YL)METHANOL Preparation Products And Raw materials

Raw materials

Preparation Products

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(1H-PYRAZOL-4-YL)METHANOL Suppliers

Alchem Pharmtech,Inc.
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Milestone PharmTech LLC
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View Lastest Price from (1H-PYRAZOL-4-YL)METHANOL manufacturers

Career Henan Chemical Co
Product
(1H-PYRAZOL-4-YL)METHANOL 25222-43-9
Price
US $9.80/KG
Min. Order
1g
Purity
≥99%
Supply Ability
100kg
Release date
2020-01-11