Impurity Reference Standard - Products

Terazosin HCl

CAT No: CL-TZS-01 CAS No: 63074-08-8 Mol Wt: 387.4:36.5 Mol F: C19H25N5O4 : HCl : 2(H2O) Inv Status: Custom Synthesis

Chemical Name: [4-(4-Amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl][(2RS)-oxolan-2-yl]methanone hydrochloride ; 1-(4-Amino-6,7-dimethoxy-2-quinazolinyl)-4-(tetrahydro-2-furoyl)piperazine monohydrochloride (as per USP)

Terazosin EP Impurity A

CAT No: CL-TZS-02 CAS No: 23680-84-4 Mol Wt: 239.7 Mol F: C10H10ClN3O2 Inv Status: Custom Synthesis

Chemical Name: 2-Chloro-6,7-dimethoxyquinazolin-4-amine

Terazosin EP Impurity B

CAT No: CL-TZS-03 CAS No: 1177261-73-2 Mol Wt: 388.4 Mol F: C19H24N4O5 Inv Status: Custom Synthesis

Chemical Name: [4-(4-Hydroxy-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl][(2RS)-oxolan-2-yl]methanone ; 1-(4-Hydroxy-6,7-dimethoxy-2-quinazolinyl)-4-[(tetrahydro-2-furanyl)carbonyl]piperazine (as per USP)

Terazosin EP Impurity C

CAT No: CL-TZS-04 CAS No: 60547-97-9 Mol Wt: 289.3 Mol F: C14H19N5O2 Inv Status: Custom Synthesis

Chemical Name: 6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine (as per EP & USP)

Terazosin EP Impurity D

CAT No: CL-TZS-05 CAS No: 102714-74-9 Mol Wt: 317.3 Mol F: C15H19O3 Inv Status: Custom Synthesis

Chemical Name: [4-(4-Amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl]formaldehyde

Terazosin EP Impurity E

CAT No: CL-TZS-06 CAS No: 102839-00-9 Mol Wt: 492.5 Mol F: C24H28N8O4 Inv Status: Custom Synthesis

Chemical Name: 2,2'-(Piperazin-1,4-diyl)bis(6,7-dimethoxyquinazolin-4-amine)

Terazosin EP Impurity F

CAT No: CL-TZS-07 CAS No: 109678-71-9 Mol Wt: 389.5 Mol F: C19H27N5O4 : HCl Inv Status: Custom Synthesis

Chemical Name: 1-[4-(4-Amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl]-5-hydroxypentan-1-one

Terazosin EP Impurity G

CAT No: CL-TZS-08 CAS No: 105356-89-6 Mol Wt: 373.4 Mol F: C18H23N5O4S Inv Status: Custom Synthesis

Chemical Name: [4-(4-Amino-6-hydroxy-7-methoxyquinazolin-2-yl)piperazin-1-yl][(2RS)-oxolan-2-yl]methanone

Terazosin EP Impurity H

CAT No: CL-TZS-09 CAS No: 105356-90-9 Mol Wt: 373.4 Mol F: C18H23N5O4S Inv Status: Custom Synthesis

Chemical Name: [4-(4-Amino-7-hydroxy-6-methoxyquinazolin-2-yl)piperazin-1-yl][(2RS)-oxolan-2-yl]methanone

Terazosin EP Impurity I

CAT No: CL-TZS-10 CAS No: 1177261-85-6 Mol Wt: 401.5 Mol F: C20H27N5O4 Inv Status: Custom Synthesis

Chemical Name: [4-(4-Amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl][(2RS,5S)-5-methyloxolan-2-yl]methanone

Terazosin EP Impurity J

CAT No: CL-TZS-11 CAS No: 152551-75-2 Mol Wt: 389.5 Mol F: C19H27N5O4 : HCl Inv Status: Custom Synthesis

Chemical Name: (2RS)-1-[4-(4-amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl]-2-hydroxypentan-1-one

Terazosin EP Impurity K

CAT No: CL-TZS-12 CAS No: 19237-84-4 Mol Wt: 383.4 : 36.5 Mol F: C19H21N5O4 : HCl Inv Status: Custom Synthesis

Chemical Name: [4-(4-Amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl](furan-2-yl)methanone Hydrochloride

Terazosin EP Impurity L

CAT No: CL-TZS-13 CAS No: 40172-95-0 Mol Wt: 180.2 Mol F: C9H12N2O2 Inv Status: Custom Synthesis

Chemical Name: (Furan-2-yl)(piperazin-1-yl)methanone

Terazosin EP Impurity M

CAT No: CL-TZS-14 CAS No: 31350-27-3 Mol Wt: 274.3 Mol F: C14H14N2O4 Inv Status: Custom Synthesis

Chemical Name: (Piperazine-1,4-diyl)bis[(furan-2-yl)methanone]

Terazosin EP Impurity N

CAT No: CL-TZS-15 CAS No: 63074-07-7 Mol Wt: 184.2 Mol F: C9H16N2O2 Inv Status: Custom Synthesis

Chemical Name: [(2RS)-oxolan-2-yl](piperazin-1-yl)methanone

Terazosin EP Impurity O

CAT No: CL-TZS-16 CAS No: 547730-06-3 Mol Wt: 282.3 Mol F: C14H22N2O4 Inv Status: Custom Synthesis

Chemical Name: Mixture of [4-[(2R)-oxolane-2-carbonyl]piperazin-1-yl][(2S)-oxolan-2-yl]methanone and (piperazine-1,4-diyl)bis[[(2RS)-oxolan-2-yl]methanone]

Terazosin Impurity 1

CAT No: CL-TZS-17 CAS No: 664347-52-8 Mol Wt: 221.2 Mol F: C10H11N3O3S Inv Status: Custom Synthesis

Chemical Name: 4-Amino-6,7-dimethoxyquinazolin-2(1H)-one

Terazosin Impurity 2

CAT No: CL-TZS-18 CAS No: 60547-96-8 Mol Wt: 220.2 Mol F: C10H12N4O2 Inv Status: Custom Synthesis

Chemical Name: 6,7-Dimethoxyquinazoline-2,4-diamine

Terazosin Impurity 3

CAT No: CL-TZS-19 CAS No: 21575-27-9 Mol Wt: 219.2 Mol F: C11H13N3O2 Inv Status: Custom Synthesis

Chemical Name: 6,7-Dimethoxy-2-methylquinazolin-4-amine

Terazosin

CAT No: CL-TZS-20 CAS No: 63590-64-7 Mol Wt: 387.4 Mol F: C19H25N5O4 Inv Status: Custom Synthesis

Chemical Name: (4-(4-Amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl)(tetrahydrofuran-2-yl)methanone

Terazosin EP Impurity P

CAT No: CL-TZS-21 CAS No: 2470437-02-4 Mol Wt: 387.4 Mol F: C19H25N5O4 Inv Status: Custom Synthesis

Chemical Name: 1-[4-(4-amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl]pentane-1,2-dione.

Terazosin Hydrochloride Dihydrate

CAT No: CL-TZS-22 CAS No: 70024-40-7 Mol Wt: 387.4 : 36.5 : 2(18.0) Mol F: C19H25N5O4 : HCl : 2(H2O) Inv Status: Custom Synthesis

Chemical Name: 1-(4-Amino-6,7-dimethoxy-2-quinazolinyl)-4-[(tetrahydro-2-furanyl)carbonxyl]piperazine hydrochloride dihydrate

Type:Impurity Reference Standard

API NAME:Terazosin

Total Products: 22

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