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| CAS No.: | 2075-45-8 |
|---|---|
| Name: | 4-Bromopyrazole |
| Article Data: | 35 |
| Molecular Structure: | |
|
|
|
| Formula: | C3H3BrN2 |
| Molecular Weight: | 146.974 |
| Synonyms: | Pyrazole,4-bromo- (6CI,7CI,8CI);4-Bromo-1H-pyrazole;NSC 522023; |
| Density: | 1.905 g/cm3 |
| Melting Point: | 93-96 °C(lit.) |
| Boiling Point: | 254.999 °C at 760 mmHg |
| Flash Point: | 108.038 °C |
| Solubility: | Slightly soluble in water. |
| Appearance: | White to cream crystalline powder |
| Hazard Symbols: |
 Xi
|
| Risk Codes: | 36/37/38 |
| Safety: | 26-37/39 |
| PSA: | 28.68000 |
| LogP: | 1.17220 |
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- 240444-70-62,3,5,6-Tetrafluor-4-(methoxymethyl)benzyl-2,2-dimethyl-3-(prop-1-en-1-yl)cyclopropancarboxylat
| Conditions | Yield |
|---|---|
| With bromine In dichloromethane at 0℃; | 100% |
| With N-Bromosuccinimide In water at 20 - 25℃; | 100% |
| With N-Bromosuccinimide In water at 20℃; | 100% |
| Conditions | Yield |
|---|---|
| With bromine |
- 50901-46-7
Methyl 4-pyridazinyl ketone
A
- 2075-45-8
4-bromo-1H-pyrazole
| Conditions | Yield |
|---|---|
| In dimethyl sulfoxide at 24.9℃; Equilibrium constant; |
- 13745-17-0
4-bromo-1H-pyrazole-3-carboxylic acid
- 2075-45-8
4-bromo-1H-pyrazole
- 2075-45-8
4-bromo-1H-pyrazole
| Conditions | Yield |
|---|---|
| With phosphate buffer at 25℃; Kinetics; |
- 2075-45-8
4-bromo-1H-pyrazole
| Conditions | Yield |
|---|---|
| With phosphate buffer at 25℃; Kinetics; |
- 2075-45-8
4-bromo-1H-pyrazole
| Conditions | Yield |
|---|---|
| With phosphate buffer at 25℃; Kinetics; |
- 2075-45-8
4-bromo-1H-pyrazole
| Conditions | Yield |
|---|---|
| With phosphate buffer at 25℃; Kinetics; |
- 2075-45-8
4-bromo-1H-pyrazole
| Conditions | Yield |
|---|---|
| With phosphate buffer at 25℃; Kinetics; |
A
- 2075-45-8
4-bromo-1H-pyrazole
B
- 5104-49-4, 51543-38-5, 51543-39-6, 51543-40-9
(S)-(+)-flurbiprofen
| Conditions | Yield |
|---|---|
| With water; sodium hydroxide at 4℃; for 24h; |
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Chemistry
IUPAC Name: 4-Bromo-1H-pyrazole
Synonyms of 1H-Pyrazole, 4-bromo- (CAS NO.2075-45-8): 4-Bromopyrazole ; 4-Brompyrazole ; 5-23-04-00172 (Beilstein Handbook Reference) ; BRN 0106510 ; NSC 522023 ; 1H-Pyrazole, 4-bromo- (9CI) ; Pyrazole, 4-bromo-
CAS NO: 2075-45-8
Classification Code: Drug / Therapeutic Agent ; Mutation data
Molecular Formula of 1H-Pyrazole, 4-bromo- (CAS NO.2075-45-8): C3H3BrN2
Molecular Weight: 146.9733
Molecular Structure:
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Melting point: 93-96 °C
H bond acceptors: 2
H bond donors: 1
Polar Surface Area: 17.82 Å2
Index of Refraction: 1.601
Molar Refractivity: 26.46 cm3
Molar Volume: 77.1 cm3
Surface Tension: 56.4 dyne/cm
Density of 1H-Pyrazole, 4-bromo- (CAS NO.2075-45-8): 1.904 g/cm3
Flash Point: 108 °C
Enthalpy of Vaporization: 47.26 kJ/mol
Boiling Point: 255 °C at 760 mmHg
Vapour Pressure: 0.0268 mmHg at 25°C
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| mouse | LD50 | intraperitoneal | 367mg/kg (367mg/kg) | Journal of Pharmacology and Experimental Therapeutics. Vol. 178, Pg. 199, 1971. |
Safety Profile
Hazard Codes: 
Xi
Risk Statements: 36/37/38
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 26-37/39
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S37/39: Wear suitable gloves and eye/face protection.
WGK Germany: 3
RTECS: UQ6200000
Hazard Note: Irritant
HazardClass: IRRITANT