terazosin
A quinazoline derivative which is an alpha-1-selective adrenoceptor blocking agent used on once-a-day basis for therapy of mild-to-moderate hypertension. Terazosin is indicated for the treatment of symptomatic benign prostatic hyperplasia (BPH). Reference standards of Terazosin API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
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Terazosin - API Standards
Catalogue No.:PA 20 3060000
Molecular Formula : C19H25N5O4
Molecular Weight : 387.44
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1-[4-(4-Amino-6,7-dimethoxy-2-quinazolinyl)-1-piperazinyl]-5-hydroxy-1-pentanone-d8
Catalogue No.:PA STI 088226
Molecular Formula : C19H19D8N5O4
Molecular Weight : 397.50
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[4-(4-Amino-6,7-dimethoxy-2-quinazolinyl)-1-piperazinyl][(5S)-tetrahydro-5-methyl-2-furanyl]methanone-d8
Catalogue No.:PA STI 088227
Molecular Formula : C20H19D8N5O4
Molecular Weight : 409.51
stdClass Object
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1-(4-(4-Amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl-2,2,3,3,5,5,6,6-d8)-2-hydroxypentan-1-one
Catalogue No.:PA STI 088228
Molecular Formula : C19H19D8N5O4
Molecular Weight : 397.50
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(4-(4-Amino-6-hydroxy-7-methoxyquinazolin-2-yl)piperazin-1-yl-2,2,3,3,5,5,6,6-d8)(tetrahydrofuran-2-yl)methanone
Catalogue No.:PA STI 088229
Molecular Formula : C18H15D8N5O4
Molecular Weight : 381.46
stdClass Object
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[pname] => (4-(4-Amino-7-hydroxy-6-methoxyquinazolin-2-yl)piperazin-1-yl-2,2,3,3,5,5,6,6-d8)(tetrahydrofuran-2-yl)methanone
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(4-(4-Amino-7-hydroxy-6-methoxyquinazolin-2-yl)piperazin-1-yl-2,2,3,3,5,5,6,6-d8)(tetrahydrofuran-2-yl)methanone
Catalogue No.:PA STI 088230
Molecular Formula : C18H15D8N5O4
Molecular Weight : 381.46
stdClass Object
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[pname] => 4-Amino-6,7-dimethoxyquinazolin-2(1H)-one Hydrochloride
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4-Amino-6,7-dimethoxyquinazolin-2(1H)-one Hydrochloride
Catalogue No.:PA 20 0111001
Molecular Formula : C10H12ClN3O3
Molecular Weight : 257.67
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2-Hydroxy-1-(piperazin-1-yl)pentan-1-one
Catalogue No.:PAI 20 306002
Molecular Formula : C9H18N2O2
Molecular Weight : 186.26
stdClass Object
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[pname] => Tert-butyl 4-(2-hydroxypentanoyl)piperazine-1-carboxylate
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Tert-butyl 4-(2-hydroxypentanoyl)piperazine-1-carboxylate
Catalogue No.:PAI 20 306001
Molecular Formula : C14H26N2O4
Molecular Weight : 286.37
stdClass Object
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[pname] => N'-Methyl-N,N-diphenylurea
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N'-Methyl-N,N-diphenylurea
Catalogue No.:PA 20 0111000
Molecular Formula : C14H14N2O
Molecular Weight : 226.28
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[pname] => 2-Hydroxypentanoyl Chloride
[catalogue_number] => PAI 20 306003
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[weight] => 136.58
[form] => C5H9ClO2
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2-Hydroxypentanoyl Chloride
Catalogue No.:PAI 20 306003
Molecular Formula : C5H9ClO2
Molecular Weight : 136.58
stdClass Object
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(4-Nitrosopiperazin-1-yl)(tetrahydrofuran-2-yl)methanone
Catalogue No.:PA 20 3061000
Molecular Formula : C9H15N3O3
Molecular Weight : 213.24