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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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BrandProduct dataPurityPrice rangeEstimated delivery
TRC logo
4-(4-Fluorophenyl)-5,6,7,8,9,10-hexahydrocycloocta[b]pyridin-2(1H)-one
REF: TR-F595210CAS: 132812-72-7 		- - -309.00 €~1,993.00 €Fri 13 Dec 24
TRC logo
Carbidopa Methyl Ester
REF: TR-C175980CAS: 91431-01-5 		- - -296.00 €~1,923.00 €Fri 13 Dec 24
TRC logo
1,1,5,5-Tetramethyl-2-(1-methylethenyl)cyclohexane
REF: TR-T305630CAS: 63251-38-7 		- - -320.00 €~2,200.00 €Fri 13 Dec 24
TRC logo
Dacuronium Bromide
REF: TR-D102700CAS: 27115-86-2 		- - -375.00 €~2,567.00 €Fri 13 Dec 24
TRC logo
3,3-Dimethyl Clobazam
REF: TR-D464955		- - -315.00 €~2,041.00 €Fri 13 Dec 24
TRC logo
(S,R)-N-(1-Phenylethyl) Ibuprofen Amide
REF: TR-P320895CAS: 81576-47-8 		- - -315.00 €~2,109.00 €Fri 13 Dec 24
TRC logo
2-Deschloro Aripiprazole
REF: TR-D282020CAS: 203395-82-8 		- - -315.00 €~2,115.00 €Fri 13 Dec 24
TRC logo
Citalopram Dimethylaminobutanone Dihydrochloride Salt
REF: TR-C504990CAS: 1329745-98-3 		- - -310.00 €~1,999.00 €Fri 13 Dec 24
TRC logo
Thiorphan
REF: TR-T369500CAS: 76721-89-6 		- - -131.00 €~1,536.00 €Fri 13 Dec 24
TRC logo
4”-trans-Hydroxy Cilostazol
REF: TR-H918300CAS: 87153-04-6 		- - -324.00 €~2,108.00 €Fri 13 Dec 24
TRC logo
N-Succinyl-L-tyrosine
REF: TR-S692150CAS: 374816-32-7 		- - -227.00 €~1,537.00 €Fri 13 Dec 24
TRC logo
Spiro[androsta-1,4-diene-6,2'-oxirane]-3,17-dione (Mixture of Diastereomers)
REF: TR-S682960CAS: 184972-12-1 		- - -187.00 €~1,404.00 €Fri 13 Dec 24
TRC logo
3-[4-(2-Methoxyethyl)phenoxy]-1,2-propanediol
REF: TR-M226140CAS: 62572-90-1 		- - -248.00 €~1,685.00 €Fri 13 Dec 24
TRC logo
rac Methadone N-Oxide Hydrochloride
REF: TR-M225871CAS: 154958-49-3 		- - -123.00 €~1,760.00 €Fri 13 Dec 24
TRC logo
(4R)-(3’,4’-Dichlorophenyl)-3,4-dihydro-2H-naphthalen-1-one
REF: TR-D435708CAS: 155748-61-1 		- - -246.00 €~1,690.00 €Fri 13 Dec 24
TRC logo
(4S)-(3’,4’-Dichlorophenyl)-3,4-dihydro-2H-naphthalen-1-one
REF: TR-D435706CAS: 124379-29-9 		- - -190.00 €~1,404.00 €Fri 13 Dec 24
TRC logo
Chenodeoxycholic Acid Methyl Ester
REF: TR-C291905CAS: 3057-04-3 		- - -236.00 €~1,556.00 €Fri 13 Dec 24
TRC logo
Bicarbamic Acid Diisopropyl Ester
REF: TR-B382150CAS: 19740-72-8 		- - -315.00 €~2,109.00 €Fri 13 Dec 24
TRC logo
2-​[3-​[4-​(4-​Chlorophenyl)​-​1-​piperazinyl]​propyl]​-1,​2,​4-triazolo[4,​3-​a]​pyridin-​3(2H)​-​one Hydrochloride
REF: TR-C433100CAS: 1263278-77-8 		- - -245.00 €~1,645.00 €Fri 13 Dec 24
TRC logo
4-(4-Cyanobenzyl)-1,2,4-triazole
REF: TR-C962335CAS: 112809-27-5 		- - -270.00 €~1,783.00 €Fri 13 Dec 24
discount label
4-(4-Fluorophenyl)-5,6,7,8,9,10-hexahydrocycloocta[b]pyridin-2(1H)-one
TRC logo
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4-(4-Fluorophenyl)-5,6,7,8,9,10-hexahydrocycloocta[b]pyridin-2(1H)-one

Controlled Product
CAS:132812-72-7
Applications An intermediate of Blonanserin (B595850). References Ridge, D., et al.: J. Med. Chem., 22, …
Formula:
C17H18FNO
Color and Shape:
Neat
Molecular weight:
271.33

Ref: TR-F595210

250mg309.00 €
2500mg1,993.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
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discount label
Carbidopa Methyl Ester
TRC logo
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Carbidopa Methyl Ester

Controlled Product
CAS:91431-01-5
Formula:
C11H16N2O4
Color and Shape:
Neat
Molecular weight:
240.256

Ref: TR-C175980

25mg1,923.00 €
2500µg296.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
1,1,5,5-Tetramethyl-2-(1-methylethenyl)cyclohexane
TRC logo
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1,1,5,5-Tetramethyl-2-(1-methylethenyl)cyclohexane

Controlled Product
CAS:63251-38-7
Stability Volatile Applications 1,1,5,5-Tetramethyl-2-(1-methylethenyl)cyclohexane is analyzed in synthetic elastomers and natural rubber studies of cyclic …
Formula:
C13H24
Color and Shape:
Colourless
Molecular weight:
180.33

Ref: TR-T305630

5mg2,200.00 €
500µg320.00 €
2500µg1,310.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
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discount label
Dacuronium Bromide
TRC logo
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Dacuronium Bromide

Controlled Product
CAS:27115-86-2
Applications Dacuronium Bromide is a metabolite of neuromuscular blocking agent Pancuronium (P178500) with much weaker …
Formula:
C33H58N2O3Br
Color and Shape:
Neat
Molecular weight:
690.63

Ref: TR-D102700

10mg375.00 €
100mg2,567.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
3,3-Dimethyl Clobazam
TRC logo
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3,3-Dimethyl Clobazam

Controlled Product
Formula:
C18H17ClN2O2
Color and Shape:
Off-White
Molecular weight:
328.79

Ref: TR-D464955

10mg315.00 €
100mg2,041.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
(S,R)-N-(1-Phenylethyl) Ibuprofen Amide
TRC logo
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(S,R)-N-(1-Phenylethyl) Ibuprofen Amide

Controlled Product
CAS:81576-47-8
Applications The (S,R)-enantiomer of Ibuprofen (I140000) impurity, an anti-inflammatory compound. References Rubin, A., et al.: …
Formula:
C21H27NO
Color and Shape:
Neat
Molecular weight:
309.45

Ref: TR-P320895

5mg315.00 €
25mg1,359.00 €
50mg2,109.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
2-Deschloro Aripiprazole
TRC logo
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2-Deschloro Aripiprazole

CAS:203395-82-8
Impurity Aripiprazole EP Impurity D Applications 2-Deschloro Aripiprazole (Aripiprazole EP Impurity D) is an impurity …
Formula:
C23H28ClN3O2
Color and Shape:
White
Molecular weight:
413.94

Ref: TR-D282020

50mg315.00 €
500mg2,115.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
Citalopram Dimethylaminobutanone Dihydrochloride Salt
TRC logo
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Citalopram Dimethylaminobutanone Dihydrochloride Salt

Controlled Product
CAS:1329745-98-3
Impurity Escitalopram EP Impurity G Applications Citalopram Dimethylaminobutanone Dihydrochloride Salt (Escitalopram EP Impurity G) Citalopram …
Formula:
C25H35Cl2FN2O2
Color and Shape:
Neat
Molecular weight:
485.46

Ref: TR-C504990

10mg310.00 €
100mg1,999.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
Thiorphan
TRC logo
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Thiorphan

Controlled Product
CAS:76721-89-6
Formula:
C12H15NO3S
Color and Shape:
Neat
Molecular weight:
253.32

Ref: TR-T369500

5mg131.00 €
25mg456.00 €
100mg1,536.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
4”-trans-Hydroxy Cilostazol
TRC logo
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4”-trans-Hydroxy Cilostazol

Controlled Product
CAS:87153-04-6
Applications A metabolite of Cilostazol. References de Morais, S., et al.: J. Biol. Chem., 269, …
Formula:
C20H27N5O3
Color and Shape:
Neat
Molecular weight:
385.46

Ref: TR-H918300

5mg324.00 €
25mg1,359.00 €
50mg2,108.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
N-Succinyl-L-tyrosine
TRC logo
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N-Succinyl-L-tyrosine

Controlled Product
CAS:374816-32-7
Formula:
C13H15NO6
Color and Shape:
White Solid
Molecular weight:
281.26

Ref: TR-S692150

5mg227.00 €
25mg988.00 €
50mg1,537.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
Spiro[androsta-1,4-diene-6,2'-oxirane]-3,17-dione (Mixture of Diastereomers)
TRC logo
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Spiro[androsta-1,4-diene-6,2'-oxirane]-3,17-dione (Mixture of Diastereomers)

Controlled Product
CAS:184972-12-1
Stability Hygroscopic Applications A metabolite of Exemestane (E957000). References Cavalcanti, G. et al.: Steroids 76, …
Formula:
C20H24O3
Color and Shape:
Neat
Molecular weight:
312.40

Ref: TR-S682960

5mg187.00 €
25mg760.00 €
50mg1,404.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
3-[4-(2-Methoxyethyl)phenoxy]-1,2-propanediol
TRC logo
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3-[4-(2-Methoxyethyl)phenoxy]-1,2-propanediol

Controlled Product
CAS:62572-90-1
Impurity Metoprolol EP Impurity D Applications 3-[4-(2-Methoxyethyl)phenoxy]-1,2-propanediol (Metoprolol EP Impurity D) is a new byproduct …
Formula:
C12H18O4
Color and Shape:
White
Molecular weight:
226.27

Ref: TR-M226140

25mg248.00 €
250mg1,685.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
rac Methadone N-Oxide Hydrochloride
TRC logo
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rac Methadone N-Oxide Hydrochloride

Controlled Product
CAS:154958-49-3
Applications Methadone N-Oxide Hydrochloride is an acid salt of rac Methadone N-Oxide (M225870). A metabolite …
Formula:
C21H27NO2(HCl)
Color and Shape:
Neat
Molecular weight:
361.9

Ref: TR-M225871

5mg123.00 €
25mg516.00 €
100mg1,760.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
(4R)-(3’,4’-Dichlorophenyl)-3,4-dihydro-2H-naphthalen-1-one
TRC logo
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(4R)-(3’,4’-Dichlorophenyl)-3,4-dihydro-2H-naphthalen-1-one

CAS:155748-61-1
Formula:
C16H12Cl2O
Color and Shape:
Neat
Molecular weight:
291.17

Ref: TR-D435708

10mg246.00 €
100mg1,690.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
(4S)-(3’,4’-Dichlorophenyl)-3,4-dihydro-2H-naphthalen-1-one
TRC logo
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(4S)-(3’,4’-Dichlorophenyl)-3,4-dihydro-2H-naphthalen-1-one

Controlled Product
CAS:124379-29-9
Applications An intermediate in the synthesis of the drug Sertraline. References Brady, K., et al.: …
Formula:
C16H12Cl2O
Color and Shape:
Yellow
Molecular weight:
291.1719

Ref: TR-D435706

50mg190.00 €
500mg1,404.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
Chenodeoxycholic Acid Methyl Ester
TRC logo
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Chenodeoxycholic Acid Methyl Ester

Controlled Product
CAS:3057-04-3
Applications A bile acid with hemolytic properties. Inhibits the initiation of Clostridium difficile spore germination. …
Formula:
C25H42O4
Color and Shape:
Neat
Molecular weight:
406.6

Ref: TR-C291905

250mg236.00 €
2500mg1,556.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
Bicarbamic Acid Diisopropyl Ester
TRC logo
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Bicarbamic Acid Diisopropyl Ester

Controlled Product
CAS:19740-72-8
Impurity Orlistat USP Related Compound B Applications Orlistat USP Related Compound B
Formula:
C8H16N2O4
Color and Shape:
Neat
Molecular weight:
204.22

Ref: TR-B382150

250mg315.00 €
2500mg2,109.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
2-​[3-​[4-​(4-​Chlorophenyl)​-​1-​piperazinyl]​propyl]​-1,​2,​4-triazolo[4,​3-​a]​pyridin-​3(2H)​-…
TRC logo
+ info

2-​[3-​[4-​(4-​Chlorophenyl)​-​1-​piperazinyl]​propyl]​-1,​2,​4-triazolo[4,​3-​a]​pyridin-​3(2H)​-​one Hydrochloride

Controlled Product
CAS:1263278-77-8
Applications 2-​[3-​[4-​(4-​Chlorophenyl)​-​1-​piperazinyl]​propyl]​-1,​2,​4-triazolo[4,​3-​a]​pyridin-​3(2H)​-​one Hydrochloride is a related compound of Trazodone (T718500), which is an antidepressant. References …
Formula:
C19H22ClN5O·ClH
Color and Shape:
Neat
Molecular weight:
408.32

Ref: TR-C433100

25mg245.00 €
250mg1,645.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
discount label
4-(4-Cyanobenzyl)-1,2,4-triazole
TRC logo
+ info

4-(4-Cyanobenzyl)-1,2,4-triazole

Controlled Product
CAS:112809-27-5
Applications 4-(4-Cyanobenzyl)-1,2,4-triazole is an intermediate in the synthesis of Letrozole (L330100), an oral, non-steroidal, aromatase …
Formula:
C10H8N4
Color and Shape:
Neat
Molecular weight:
184.20

Ref: TR-C962335

1g270.00 €
10g1,783.00 €
Estimated delivery in United States, on Friday 13 Dec 2024
+ info
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