Impurity Reference Standards

Pharmacopeial Impurities (EP / USP / BP)

Named EP, USP and BP impurities and related compounds for pharmacopoeial methods, system suitability and peak identification.

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Terazosin EP Impurity E

CAS: 102839-00-9
Formula: C₂₄H₂₈N₈O₄
MW: 492.5 g/mol

ZX-021471

Terazosin EP Impurity F

CAS: 109678-71-9
Formula: C₁₉H₂₇N₅O₄
MW: 389.4 g/mol

ZX-027169

Terazosin EP Impurity G

CAS: 105356-89-6
Formula: C₁₈H₂₃N₅O₄
MW: 373.4 g/mol

ZX-027175

Terazosin EP Impurity H

CAS: 105356-90-9
Formula: C₁₈H₂₃N₅O₄
MW: 373.4 g/mol

ZX-027176

Terazosin EP Impurity I

CAS: 1177261-85-6
Formula: C₂₀H₂₇N₅O₄
MW: 401.5 g/mol

ZX-027170

Terazosin EP Impurity J

CAS: 152551-75-2
Formula: C₁₉H₂₇N₅O₄
MW: 389.4 g/mol

ZX-027171

Terazosin EP Impurity K

CAS: 19237-84-4
Formula: C₁₉H₂₂ClN₅O₄
MW: 419.9 g/mol

ZX-026494

Terazosin EP Impurity L

CAS: 40172-95-0
Formula: C₉H₁₂N₂O₂
MW: 180.2 g/mol

ZX-022876

Terazosin EP Impurity N

CAS: 63074-07-7
Formula: C₉H₁₆N₂O₂
MW: 184.24 g/mol

ZX-027173

Terazosin EP Impurity O

CAS: 547730-06-3
Formula: C₁₄H₂₂N₂O₄
MW: 282.34 g/mol

ZX-027174

Terazosin Hydrochloride Dihydrate EP Impurity L (Hydrochloride Salt)

CAS: 60548-09-6
Formula: C₉H₁₃ClN₂O₂
MW: 216.66 g/mol

ZX-027172

Terbinafine EP Impurity A

CAS: 14489-75-9
Formula: C₁₂H₁₃N
MW: 171.24 g/mol

ZX-006020

Terbinafine EP Impurity B

CAS: 78628-81-6
Formula: C₂₁H₂₅N
MW: 291.4 g/mol

ZX-027177

Terbinafine EP Impurity D

CAS: 151222-50-3
Formula: C₂₂H₂₇N
MW: 305.5 g/mol

ZX-006021

Terbinafine EP Impurity D (Hydrochloride)

CAS: 877265-33-3
Formula: C₂₂H₂₈ClN
MW: 341.9 g/mol

ZX-006022

Terbinafine EP Impurity F (Freebase)

CAS: 926281-74-5
Formula: C₂₁H₂₅N
MW: 291.4 g/mol

ZX-006023

Terbinafine EP Impurity F (Hydrochloride)

CAS: 926281-74-5
Formula: C₂₁H₂₅N
MW: 291.4 g/mol

ZX-006024

Terbutaline EP Impurity B

CAS: 94120-05-5
Formula: C₁₃H₁₉NO₃
MW: 237.29 g/mol

ZX-027180

Terbutaline EP Impurity C

CAS: 139508-58-0
Formula: C₁₂H₁₇NO₃
MW: 223.27 g/mol

ZX-032628

Terbutaline EP Impurity D

CAS: 94109-61-2
Formula: C₁₉H₂₃NO₃
MW: 313.4 g/mol

ZX-027181

Terconazole EP Impurity A

CAS: 1486497-66-8
Formula: C₂₆H₃₁Cl₂N₅O₃
MW: 532.5 g/mol

ZX-022880

Terfenadine EP Impurity B

CAS: 1632048-95-3
Formula: C₃₂H₄₁NO
MW: 455.7 g/mol

ZX-036664

Terfenadine EP Impurity G

CAS: 104953-06-2
Formula: C₃₂H₃₉NO
MW: 453.7 g/mol

ZX-036767

Terfenadine EP Impurity H

CAS: 147158-67-6
Formula: C₃₂H₄₁NO
MW: 455.7 g/mol

ZX-036765

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