3-Chloro Cetirizine Dihydrochloride (USP) ; (RS)-2-[2-[4-[(3-Chlorophenyl)phenylmethyl]piperazin-1-yl]ethoxy] acetic acid dihydrochloride ; CAS # 1232460-29-5 ;

Cetirizine 4-CBH Impurity (USP) ; Meclizine USP RC A ; 4-Chlorobenzhydrol ; CAS # 119-56-2 ;

(4-Chlorophenyl)phenylmethanone ; CAS # 134-85-0 ;

Allyl 2-(2-(4-((4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetate dihydrochloride ;

2-[4-[(R)-(4-Chlorophenyl)phenylmethyl]piperazin-1-yl]ethanol dihydrochloride ; CAS # 705289-61-8 (base) ; 728948-88-7 (2 HCl) ;

tert-Butyl 2-(2-(4-benzhydrylpiperazin-1-yl)ethoxy)acetate ;

(RS)-2-[2-[4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl]ethoxy]acetic acid dihydrochloride ; CAS # 83881-52-1 ;

Cetirizine CBHP Impurity (USP) ; (RS)-1-[(4-Chlorophenyl)phenylmethyl]piperazine ; CAS # 303-26-4 ;

(RS)-2-[4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl]acetic acid dihydrochloride ; CAS # 1000690-91-4 (2 HCl) ; 113740-61-7 (base) ;

(RS)-2-[4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl]acetic acid ethyl ester ; CAS # 19178-83-7 ;

Cetirizine 2-Chloro Analog (2HCl) ; (RS)-2-[2-[4-[(2-Chlorophenyl)phenylmethyl]piperazin-1-yl]ethoxy] acetic acid dihydrochloride ; CAS # 83881-59-8 (base) ; 2702511-37-1 (2HCl) ;

Cetirizine Dimer Impurity (USP) ; 1,4-bis[(4-Chlorophenyl)phenylmethyl]piperazine dihydrochloride ; CAS # 346451-15-8 (base) ; 856841-95-7 (2HCl) ;

Hydroxyzine Acetic Acid Dihydrochloride ; (RS)-2-[2-[2-[4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl]ethoxy] ethoxy] acetic acid dihydrochloride ; CAS # 682323-77-9 (base) ; 83881-56-5 (2 HCl) ;

Deschloro Cetirizine Dihydrochloride (USP) ; [2-[4-(Diphenylmethyl)piperazin-1-yl]ethoxy]acetic acid dihydrochloride ; CAS # 83881-54-3 (HCl) ; CAS # 83881-53-2 (Free Base) ;

Cetirizine USP RC G ; Cetirizine Ethanol Impurity (USP) ; 2-[4-[(RS)-(4-Chlorophenyl)phenylmethyl]piperazin-1-yl]ethanol dihydrochloride ; CAS # 109806-71-5 (base); 164726-80-1 (2 HCl) ;

2,3-Dihydroxypropyl 2-(2-(4-((4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetate dihydrochloride ; CAS # 1243652-36-9 (Base) ;

2-Hydroxypropyl 2-(2-(4-((4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetate dihydrochloride ;

(2RS,3S,4R,5S)-3,4-Dihydroxy-6-(hydroxymethyl)-5-((2S,3S,4S,5R)-3,4,5-trihydroxy-6-(hydroxymethyl)-tetrahydro-2H-pyran-2-yloxy)-tetrahydro-2H-pyran-2-yl 2-(2-(4-((4-chlorophenyl)(phenyl) methyl)piperazin-1-yl)ethoxy)acetate hydrochloride ;

(RS)-2-[2-[4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl]ethoxy]acetic acid methyl ester dihydrochloride ; CAS # 83881-46-3 (base) ; 83881-48-5 (2 HCl) ;

2-(p-Chlorobenzhydrylpiperazine)-[N,N-bis(2-ethoxyacetic acid)] ;

(R)-[2-[4-(4-Chlorophenyl)phenylmethyl]-1-oxido-1-piperazinyl]ethoxy]acetic acid ; CAS # 442863-80-1 ;

(RS)-2-[2-[4-[(4-Chlorophenyl)phenylmethyl]-1-oxido-piperazin-1-yl]ethoxy] acetic acid ; CAS # 1076199-80-8 ;

1-((4-Chlorophenyl)(phenyl)methyl)-4-(phenylsulfonyl)piperazine ; CAS # 1391052-52-0 ;

(R)-Cetirizine DiHydrochloride ; LevoCetirizine Dihydrochloride ; (R)-2-[2-[4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl]ethoxy]acetic acid dihydrochloride ; CAS # 130018-77-8 (base) ; 130018-87-0 (HCl salt) ;

N,N-Bis(2-chloroethyl)benzenesulfonamide ; CAS # 58023-19-1 ;

(S)-Cetirizine DiHydrochloride ; (S)-2-[2-[4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl]ethoxy]acetic acid dihydrochloride ; CAS # 163837-48- 7 (HCl); 130018-76-7 (base) ;

tert-Butyl 2-(2-(4-((4-chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethoxy)acetate ; CAS # 335017-46-4 ;

Cetirizine Dihydrochloride Ethyl Ester ; CAS # 246870-46-2 (base) ;

Cetirizine Deschloro Ethanol Impurity ; 2-[4-(Diphenylmethyl)piperazin-1-yl]ethanol dihydrochloride ; CAS # 108983-83-1 ;

Cetirizine Amide Impurity ; (RS)-2-[2-[4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl]ethoxy]acetamide dihydrochloride ; CAS # 200707-85-3 (HCl salt) ; 83881-37-2 (base) ;