Active pharmaceutical ingredient (API) impurities for research

All products contained in this category are intended for laboratory use only, and are not meant for human consumption.

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Product data	Purity	Price range	Estimated delivery
3’-p-Hydroxy Paclitaxel-d5 REF: TR-H948897CAS: 132160-32-8	- - -	2,345.00 €~4,509.00 €	Tue 29 Oct 24
Benazeprilat REF: TR-B119760CAS: 86541-78-8	- - -	228.00 €~990.00 €	Tue 29 Oct 24
7-Hydroxy-1,3-naphthalenedisulfonic Acid Dipotassium Salt REF: TR-H950730CAS: 842-18-2	- - -	229.00 €~1,025.00 €	Tue 29 Oct 24
3-(Isonicotinoylhydrazonomethyl) Rifamycin REF: TR-I821780CAS: 13292-53-0	- - -	320.00 €~2,110.00 €	Tue 29 Oct 24
2H-2-Ethyl Candesartan REF: TR-E900865CAS: 1246819-02-2	- - -	236.00 €~1,585.00 €	Tue 29 Oct 24
Didemethyl Mifepristone REF: TR-D439550CAS: 104004-92-4	- - -	306.00 €~1,969.00 €	Tue 29 Oct 24
FOY 251 REF: TR-F754500CAS: 71079-09-9	- - -	299.00 €~1,967.00 €	Tue 29 Oct 24
25-O-Deacetyl Rifabutin REF: TR-D198980CAS: 100324-63-8	- - -	188.00 €~602.00 €	Tue 29 Oct 24
Guanine REF: TR-G836000CAS: 73-40-5	- - -	107.00 €~201.00 €	Tue 29 Oct 24
4-Hydroxyphenylacetaldehyde, approximately ~15% wt/vol in Ethyl Acetate REF: TR-H949050CAS: 7339-87-9	- - -	248.00 €~1,684.00 €	Tue 29 Oct 24
Emtricitabine Carboxylic Acid REF: TR-E525035CAS: 1238210-10-0	- - -	331.00 €~2,139.00 €	Tue 29 Oct 24
Propofol 4-Carboxylic Acid REF: TR-P829760CAS: 13423-73-9	- - -	306.00 €~2,022.00 €	Tue 29 Oct 24
N-Deacetyl-N-formyl Colchicine REF: TR-D198940CAS: 7411-12-3	- - -	313.00 €~1,406.00 €	Tue 29 Oct 24
9,10-Dihydrolysergol REF: TR-D449150CAS: 18051-16-6	- - -	175.00 €~309.00 €	Tue 29 Oct 24
rac N,O-Didesmethyl Tramadol-d3 REF: TR-D441222CAS: 1261398-22-4	- - -	382.00 €~2,632.00 €	Tue 29 Oct 24
trans-1,2,3,4,4a,10,11,11a-Octahydro-N,N-dimethyl-5H-Dibenzo[a,d]cycloheptene-Δ5,γ-propylamine Hydrochloride REF: TR-O236425CAS: 27867-02-3	- - -	259.00 €~1,749.00 €	Tue 29 Oct 24
2-Phenyl-1-[4-(trifluoromethyl)phenyl]ethane 2-(Aminoethyl)oxime(Fluvoxamine Impurity) REF: TR-P337520CAS: 1217241-15-0	- - -	321.00 €~2,049.00 €	Tue 29 Oct 24
4-Hydroxy Omeprazole Sulfide REF: TR-H948845CAS: 103876-98-8	- - -	229.00 €~704.00 €	Tue 29 Oct 24
21-Acetoxy-11b-hydroxy-16a,17a-propylmethylenedioxpregna-1,4-diene-3,20-dione REF: TR-A165740CAS: 51333-05-2	- - -	123.00 €~1,800.00 €	Tue 29 Oct 24
(R,S,S)-Enalapril Maleate REF: TR-E555245CAS: 1356932-13-2	- - -	361.00 €~2,427.00 €	Tue 29 Oct 24

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3’-p-Hydroxy Paclitaxel-d5

Controlled Product

CAS:132160-32-8

Formula:

C₄₇H₄₆D₅NO₁₅

Color and Shape:

Off White Solid

Molecular weight:

874.94

Ref: TR-H948897

1mg		4,509.00 €
500µg		2,345.00 €

Estimated delivery in United States, on Tuesday 29 Oct 2024

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Benazeprilat

Controlled Product

CAS:86541-78-8

Formula:

C₂₂H₂₄N₂O₅

Color and Shape:

White To Off-White

Molecular weight:

396.44

Ref: TR-B119760

5mg		228.00 €
10mg		371.00 €
50mg		990.00 €

Estimated delivery in United States, on Tuesday 29 Oct 2024

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7-Hydroxy-1,3-naphthalenedisulfonic Acid Dipotassium Salt

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7-Hydroxy-1,3-naphthalenedisulfonic Acid Dipotassium Salt

Controlled Product

CAS:842-18-2

Applications 7-Hydroxy-1,3-naphthalenedisulfonic acid is a coupling component used to prepare heterocyclic monoazo dyes. References Naik, …

Formula:

C₁₀H₆O₇S₂K

Color and Shape:

Off White Solid

Molecular weight:

380.48

Ref: TR-H950730

5g		229.00 €
25g		362.00 €
100g		1,025.00 €

Estimated delivery in United States, on Tuesday 29 Oct 2024

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3-(Isonicotinoylhydrazonomethyl) Rifamycin

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3-(Isonicotinoylhydrazonomethyl) Rifamycin

CAS:13292-53-0

Applications An impurity of Rifampamycin (R508000).

Formula:

C₄₄H₅₂N₄O₁₃

Color and Shape:

Neat

Molecular weight:

844.90

Ref: TR-I821780

5mg		320.00 €
50mg		2,110.00 €

Estimated delivery in United States, on Tuesday 29 Oct 2024

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2H-2-Ethyl Candesartan

Controlled Product

CAS:1246819-02-2

Applications: Candesartan (C175575) impurity.

Formula:

C₂₆H₂₄N₆O₃

Color and Shape:

Neat

Molecular weight:

468.512

Ref: TR-E900865

10mg		236.00 €
100mg		1,585.00 €

Estimated delivery in United States, on Tuesday 29 Oct 2024

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Didemethyl Mifepristone

Controlled Product

CAS:104004-92-4

Applications A metabolite of Mifepristone. References Heikinheimo, O., et al.: J. Steroid Biochem., 26, 279 …

Formula:

C₂₇H₃₁NO₂

Color and Shape:

Neat

Molecular weight:

401.54

Ref: TR-D439550

1mg		306.00 €
5mg		1,241.00 €
10mg		1,969.00 €

Estimated delivery in United States, on Tuesday 29 Oct 2024

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FOY 251

CAS:71079-09-9

Applications A metabolite of Camostat. It is a pollen protease inhibitor for prevention and control …

Formula:

C₁₆H₁₅N₃O₄·CH₄O₃S

Color and Shape:

White Solid

Molecular weight:

409.41

Ref: TR-F754500

1mg		299.00 €
5mg		1,253.00 €
10mg		1,967.00 €

Estimated delivery in United States, on Tuesday 29 Oct 2024

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25-O-Deacetyl Rifabutin

Controlled Product

CAS:100324-63-8

Formula:

C₄₄H₆₀N₄O₁₀

Color and Shape:

Purple

Molecular weight:

804.97

Ref: TR-D198980

5mg		188.00 €
10mg		248.00 €
25mg		602.00 €

Estimated delivery in United States, on Tuesday 29 Oct 2024

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Guanine

CAS:73-40-5

Impurity Aciclovir EP Impurity B Applications Guanine is one of the five nucleobases incorporated into …

Formula:

C₅H₅N₅O

Color and Shape:

White To Off-White

Molecular weight:

151.13

Ref: TR-G836000

5g		107.00 €
25g		201.00 €

Estimated delivery in United States, on Tuesday 29 Oct 2024

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4-Hydroxyphenylacetaldehyde, approximately ~15% wt/vol in Ethyl Acetate

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4-Hydroxyphenylacetaldehyde, approximately ~15% wt/vol in Ethyl Acetate

Controlled Product

CAS:7339-87-9

Formula:

C₈H₈O₂

Color and Shape:

Colourless To Light Yellow

Molecular weight:

136.15

Ref: TR-H949050

10mg		248.00 €
50mg		1,067.00 €

Estimated delivery in United States, on Tuesday 29 Oct 2024

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Emtricitabine Carboxylic Acid

Controlled Product

CAS:1238210-10-0

Impurity Emtricitabine Carboxylic Acid Impurity Applications Emtricitabine Carboxylic Acid is an impurity of the antiviral …

Formula:

C₈H₈FN₃O₄S

Color and Shape:

Neat

Molecular weight:

261.23

Ref: TR-E525035

10mg		331.00 €
100mg		2,139.00 €

Estimated delivery in United States, on Tuesday 29 Oct 2024

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Propofol 4-Carboxylic Acid

Controlled Product

CAS:13423-73-9

Impurity Propofol EP Impurity N Applications Propofol 4-Carboxylic Acid (Propofol EP Impurity N) is a …

Formula:

C₁₃H₁₈O₃

Color and Shape:

Neat

Molecular weight:

222.28

Ref: TR-P829760

1g		306.00 €
10g		2,022.00 €

Estimated delivery in United States, on Tuesday 29 Oct 2024

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N-Deacetyl-N-formyl Colchicine

CAS:7411-12-3

Applications Colchicine (C640000) derivative. A new alkaloid from Gloriosa superba. Not a dangerous good if …

Formula:

C₂₁H₂₃NO₆

Color and Shape:

Yellow To Dark Yellow

Molecular weight:

385.41

Ref: TR-D198940

10mg		313.00 €
25mg		739.00 €
50mg		1,406.00 €

Estimated delivery in United States, on Tuesday 29 Oct 2024

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9,10-Dihydrolysergol

Controlled Product

CAS:18051-16-6

Applications A O-acylated derivative of Lysergol and Dehydrolysergol-I; partial agonist and antagonist at 5-HT2A, 5-HT2C …

Formula:

C₁₆H₂₀N₂O

Color and Shape:

Neat

Molecular weight:

256.34

Ref: TR-D449150

5mg		175.00 €
10mg		309.00 €

Estimated delivery in United States, on Tuesday 29 Oct 2024

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rac N,O-Didesmethyl Tramadol-d3

Controlled Product

CAS:1261398-22-4

Applications A labelled metabolite of Tramadol. References Garrido, M., et al.: J. Pharmacol. Exp. Ther., …

Formula:

C₁₄H₁₈D₃NO₂

Color and Shape:

Neat

Molecular weight:

238.34

Ref: TR-D441222

1mg		382.00 €
10mg		2,632.00 €

Estimated delivery in United States, on Tuesday 29 Oct 2024

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trans-1,2,3,4,4a,10,11,11a-Octahydro-N,N-dimethyl-5H-Dibenzo[a,d]cycloheptene-Δ5,γ-propylamine Hyd…

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trans-1,2,3,4,4a,10,11,11a-Octahydro-N,N-dimethyl-5H-Dibenzo[a,d]cycloheptene-Δ5,γ-propylamine Hydrochloride

Controlled Product

CAS:27867-02-3

Impurity Amitriptyline EP Impurity E Applications trans-1,2,3,4,4a,10,11,11a-Octahydro-N,N-dimethyl-5H-Dibenzo[a,d]cycloheptene-Δ5,γ-propylamine Hydrochloride (Amitriptyline EP Impurity E) is an impurity …

Formula:

C₂₀H₂₉N·HCl

Color and Shape:

Neat

Molecular weight:

319.91