cetirizine
cetirizine dihydrochloride
Conditions | Yield |
---|---|
With hydrogenchloride In water; acetone at 20 - 50℃; for 2h; | 87.9% |
With hydrogenchloride In water pH=8; | |
With hydrogenchloride In ethyl acetate; isopropyl alcohol at 25 - 35℃; for 1 - 2h; pH=2; |
2-{4-[(4-chlorophenyl)(phenyl)methyl]piperazin-1-yl}ethan-1-ol
sodium monochloroacetic acid
cetirizine dihydrochloride
Conditions | Yield |
---|---|
Stage #1: 2-{4-[(4-chlorophenyl)(phenyl)methyl]piperazin-1-yl}ethan-1-ol; sodium monochloroacetic acid With sodium hydroxide In water; dimethyl sulfoxide; toluene at 30 - 35℃; for 14 - 18h; Stage #2: With hydrogenchloride In water; acetone at 20℃; | 87.4% |
C21H25ClN2O2
cetirizine dihydrochloride
Conditions | Yield |
---|---|
Stage #1: C21H25ClN2O2 With potassium dihydrogenphosphate; phosphoric acid; dihydrogen peroxide In dichloromethane; dimethyl sulfoxide at 5 - 25℃; for 8h; pH=4 - 5; Stage #2: With hydrogenchloride In butanone at 60℃; | 86% |
2-(2-(4-((4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetamide
cetirizine dihydrochloride
Conditions | Yield |
---|---|
Stage #1: 2-(2-(4-((4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetamide With sodium hydroxide In water Heating / reflux; Stage #2: With hydrogenchloride In ethyl acetate; isopropyl alcohol for 1 - 2h; |
cetirizine hydrochloride
cetirizine dihydrochloride
Conditions | Yield |
---|---|
With hydrogenchloride In ethyl acetate; isopropyl alcohol at 25 - 35℃; for 1.16667 - 2.25h; pH=2; |
cetirizine dihydrochloride
Conditions | Yield |
---|---|
With hydrogenchloride; sodium hydroxide In dichloromethane; water; acetone | |
With water; sodium hydroxide for 3h; Reflux; Large scale reaction; |
(RS)-N,N-diethyl-{2-[4-(α-phenyl-p-chloro-benzyl)piperazin-1-yl]ethoxy}-acetamide
cetirizine dihydrochloride
Conditions | Yield |
---|---|
In 1,4-dioxane |
(RS)-N,N-diallyl-{2-[4-(α-phenyl-p-chloro-benzyl)piperazin-1-yl]ethoxy}-acetamide
cetirizine dihydrochloride
Conditions | Yield |
---|---|
In 1,4-dioxane |
(+/-)-{2-[4-(α-phenyl-p-chlorobenzyl)-piperazin-1-yl]-ethoxy}-acetic acid-N,N-dimethylamide
cetirizine dihydrochloride
N-(4-chlorobenzhydryl)piperazine
pyrographite
cetirizine dihydrochloride
Conditions | Yield |
---|---|
With ammonium hydroxide; sodium hydroxide; sodium carbonate In N-methyl-acetamide; hydrogenchloride; acetone |
cetirizine dihydrochloride
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: water / toluene 2.1: sodium methylate / toluene / 10 - 15 °C / Inert atmosphere; Large scale reaction 2.2: 2 h / 50 - 60 °C / Large scale reaction 3.1: water; sodium hydroxide / 3 h / Reflux; Large scale reaction View Scheme |
(4-chlorophenyl)phenylmethanol
cetirizine dihydrochloride
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1.1: thionyl chloride / toluene / 1 h / 85 - 90 °C / Large scale reaction 2.1: toluene / 3 h / 80 °C / Large scale reaction 2.2: pH 1 / Large scale reaction 3.1: water / toluene 4.1: sodium methylate / toluene / 10 - 15 °C / Inert atmosphere; Large scale reaction 4.2: 2 h / 50 - 60 °C / Large scale reaction 5.1: water; sodium hydroxide / 3 h / Reflux; Large scale reaction View Scheme |
1-chloro-4-(chloro(phenyl)methyl)benzene
cetirizine dihydrochloride
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: toluene / 3 h / 80 °C / Large scale reaction 1.2: pH 1 / Large scale reaction 2.1: water / toluene 3.1: sodium methylate / toluene / 10 - 15 °C / Inert atmosphere; Large scale reaction 3.2: 2 h / 50 - 60 °C / Large scale reaction 4.1: water; sodium hydroxide / 3 h / Reflux; Large scale reaction View Scheme |
2-{4-[(4-chlorophenyl)(phenyl)methyl]piperazin-1-yl}ethan-1-ol
cetirizine dihydrochloride
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: sodium methylate / toluene / 10 - 15 °C / Inert atmosphere; Large scale reaction 1.2: 2 h / 50 - 60 °C / Large scale reaction 2.1: water; sodium hydroxide / 3 h / Reflux; Large scale reaction View Scheme |
4-chlorobenzophenone
cetirizine dihydrochloride
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1.1: water; Aliquat 336 / toluene / 20 °C / Large scale reaction 1.2: 5 h / 50 °C / Large scale reaction 2.1: thionyl chloride / toluene / 1 h / 85 - 90 °C / Large scale reaction 3.1: toluene / 3 h / 80 °C / Large scale reaction 3.2: pH 1 / Large scale reaction 4.1: water / toluene 5.1: sodium methylate / toluene / 10 - 15 °C / Inert atmosphere; Large scale reaction 5.2: 2 h / 50 - 60 °C / Large scale reaction 6.1: water; sodium hydroxide / 3 h / Reflux; Large scale reaction View Scheme |
cetirizine dihydrochloride
diazomethyl-trimethyl-silane
Conditions | Yield |
---|---|
In methanol for 2h; Reflux; | 99% |
cetirizine dihydrochloride
diazomethyl-trimethyl-silane
methyl 2-[2-[4-[(4-chlorophenyl)phenylmethyl]-1-piperazinyl]ethoxy]-acetate
Conditions | Yield |
---|---|
In methanol; hexane at 0℃; for 0.166667h; | 97% |
cetirizine dihydrochloride
methyl 2-[2-[4-[(4-chlorophenyl)phenylmethyl]-1-piperazinyl]ethoxy]-acetate
Conditions | Yield |
---|---|
With sulfuric acid In methanol for 10h; Heating / reflux; | 95% |
cetirizine dihydrochloride
Conditions | Yield |
---|---|
Stage #1: cetirizine dihydrochloride With thionyl chloride In N,N-dimethyl-formamide for 3h; Stage #2: In N,N-dimethyl-formamide; toluene for 1h; | 92% |
Diazoethan
cetirizine dihydrochloride
Conditions | Yield |
---|---|
In tetrahydrofuran at 0℃; | 90% |
vanadium(IV) fluoride
cetirizine dihydrochloride
difluorovanadium(IV)(2-[4-[(4-chlorophenyl)phenylmethyl]-1-piperazinyl]ethoxy acetate)
Conditions | Yield |
---|---|
In methanol methanolic soln. of VF4 added to methanolic soln. of C21H25O3N2Cl dropwise with stirring, mixt. had pH 3, refluxed for 2 h, kept overnight with stirring at room temp.; solvent removed on a rotary apparatus under reduced pressure; recrystn. (MeOH/n-hexane, 1/1); elem. anal.; | 82% |
1-hydroxy-pyrrolidine-2,5-dione
2-methoxyethylamine
cetirizine dihydrochloride
mPEG1-cetirizine
Conditions | Yield |
---|---|
Stage #1: 1-hydroxy-pyrrolidine-2,5-dione; cetirizine dihydrochloride With dicyclohexyl-carbodiimide In N,N-dimethyl-formamide at 20℃; Stage #2: 2-methoxyethylamine In N,N-dimethyl-formamide for 5h; | 80% |
cetirizine dihydrochloride
2-(2-(4-((4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetamide
Conditions | Yield |
---|---|
Stage #1: cetirizine dihydrochloride With thionyl chloride In N,N-dimethyl-formamide at 20℃; for 3h; Large scale; Stage #2: With ammonia In N,N-dimethyl-formamide; toluene at 0 - 30℃; Large scale; | 78.5% |
Multi-step reaction with 2 steps 1: methanol / 2 h / Reflux 2: ammonia / methanol / 775.74 - 1551.49 Torr View Scheme |
L-alanin
cetirizine dihydrochloride
Conditions | Yield |
---|---|
With sodium hydrogencarbonate In ethanol at 90℃; | 77% |
L-alanin
cetirizine dihydrochloride
Conditions | Yield |
---|---|
With sodium hydrogencarbonate In ethanol at 90℃; | 72% |
L-alanin
cetirizine dihydrochloride
Conditions | Yield |
---|---|
With sodium hydrogencarbonate In ethanol at 90℃; | 65% |
(Z)-4-hydroxybut-2-enyl 1-(nitrooxy)ethyl carbonate
cetirizine dihydrochloride
(Z)-4-((1-(nitrooxy)ethoxy)carbonyloxy)but-2-enyl 2-(2-(4-((4-chlorophenyl) (phenyl)methyl)piperazin-1-yl)ethoxy)acetate
Conditions | Yield |
---|---|
With dmap; triethylamine; dicyclohexyl-carbodiimide In dichloromethane for 2h; | 32.6% |
Conditions | Yield |
---|---|
With triethylamine; dicyclohexyl-carbodiimide; dmap In dichloromethane at 20℃; for 15h; | 19% |
Conditions | Yield |
---|---|
Stage #1: 3-Hydroxybutyric acid; cetirizine dihydrochloride With 1-hydroxy-pyrrolidine-2,5-dione; N-ethyl-N,N-diisopropylamine In dichloromethane; N,N-dimethyl-formamide for 15h; Stage #2: With 1,1,1,3',3',3'-hexafluoro-propanol In dichloromethane for 0.166667h; | 2% |
cetirizine dihydrochloride
cetirizine
Conditions | Yield |
---|---|
With sodium hydroxide In water for 4.7h; |
cetirizine dihydrochloride
cetirizine hydrochloride
Conditions | Yield |
---|---|
Stage #1: cetirizine dihydrochloride With sodium hydroxide In water pH=12; Stage #2: With hydrogenchloride In water pH=2 - 3; |
The Cetirizine hydrochloride is an organic compound with the formula C21H25ClN2O3.2(HCl). The IUPAC name of this chemical is 2-[2-[4-[(4-chlorophenyl)-phenylmethyl]piperazin-1-yl]ethoxy]acetic acid dihydrochloride. With the CAS registry number 83881-52-1, it is also named as (+-)-(2-(4-(p-Chloro-alpha-phenylbenzyl)-1-piperazinyl)ethoxy)acetic acid, dihydrochloride. The classification codes are Antihistaminic; Drug / Therapeutic Agent; Reproductive Effect.
The other characteristics of this product can be summarized as: (1)ACD/LogP: 2.17; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -0.25; (4)ACD/LogD (pH 7.4): -1.09; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1.37; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 5; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 8; (12)Polar Surface Area: 42.01 Å2; (13)Enthalpy of Vaporization: 86.31 kJ/mol; (14)Vapour Pressure: 1.39E-12 mmHg at 25°C; (15)Rotatable Bond Count: 8; (16)Exact Mass: 460.108726; (17)MonoIsotopic Mass: 460.108726; (18)Topological Polar Surface Area: 53; (19)Heavy Atom Count: 29; (20)Complexity: 443.
Uses of Cetirizine hydrochloride: It is a potent second-generation histamine H1 antagonist that is effective in the treatment of allergic rhinitis, chronic urticaria, and pollen-induced asthma. Unlike many traditional antihistamines, it does not cause drowsiness or anticholinergic side effects.
When you are using this chemical, please be cautious about it as the following:
It is not only harmful if swallowed, but also irritating to eyes, respiratory system and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing.
People can use the following data to convert to the molecule structure.
1. SMILES:Cl.Cl.Clc1ccc(cc1)C(c2ccccc2)N3CCN(CC3)CCOCC(=O)O
2. InChI:InChI=1/C21H25ClN2O3.2ClH/c22-19-8-6-18(7-9-19)21(17-4-2-1-3-5-17)24-12-10-23(11-13-24)14-15-27-16-20(25)26;;/h1-9,21H,10-16H2,(H,25,26);2*1H
3. InChIKey:PGLIUCLTXOYQMV-UHFFFAOYAH
The following are the toxicity data which has been tested.
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
dog | LD50 | oral | > 320mg/kg (320mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA" GASTROINTESTINAL: NAUSEA OR VOMITING | Kiso to Rinsho. Clinical Report. Vol. 28, Pg. 1859, 1994. |
mouse | LDLo | intraperitoneal | 138mg/kg (138mg/kg) | United States Patent Document. Vol. #4525358, | |
rat | LD50 | oral | 365mg/kg (365mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) LUNGS, THORAX, OR RESPIRATION: RESPIRATORY DEPRESSION | Kiso to Rinsho. Clinical Report. Vol. 28, Pg. 1859, 1994. |
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