Recently Viewed 0
Meet Clearsynth at CPHI India 2026 · November 23–25 · Booth 2J10 · IICC, Yashobhoomi, New Delhi View event
My Account Need quick assistance? WhatsApp us +91-22-45045900 sales@clearsynth.com

Impurity Products

Browse available compounds, catalogue references, CAS numbers and technical details from Clearsynth.

Showing 6409-6432 of 27544 products
(8R,9S,13S,17R)-3,15,17-trihydroxy-13-methyl-7,8,11,12,13,17-hexahydro-6H-cyclopenta[a]phenanthren-16(9H)-one chemical structure
Custom Synthesis

(8R,9S,13S,17R)-3,15,17-trihydroxy-13-methyl-7,8,11,12,13,17-hexahydro-6H-cyclopenta[a]phenanthren-16(9H)-one

CAT No. CS-O-50612
CAS No. -
Category Impurity
Parent API Estetrol
Formula C18H20O4
Mol. Wt. 300.35
(8S,9S,10R,13R,14S,17S)-17-ethyl-10,13-dimethyl-1,2,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydrosp chemical structure
Custom Synthesis

(8S,9S,10R,13R,14S,17S)-17-ethyl-10,13-dimethyl-1,2,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydrosp

CAT No. CS-O-58479
CAS No.
Category Impurity
Parent API Etonogestrel
Formula C23H36O2
Mol. Wt. 344.53
(8Z,11E,14E)-ethyl octadeca-8,11,14,17-tetraenoate chemical structure
Custom Synthesis

(8Z,11E,14E)-ethyl octadeca-8,11,14,17-tetraenoate

CAT No. CS-O-39895
CAS No. -
Category Impurity
Parent API
Formula C20H32O2
Mol. Wt. 304.47
(9-Chloro-3,4-dihydro-2H-benzo[b][1,4]dioxepin-7-yl)-acetic acid chemical structure
Custom Synthesis

(9-Chloro-3,4-dihydro-2H-benzo[b][1,4]dioxepin-7-yl)-acetic acid

CAT No. CS-M-23142
CAS No. 874623-17-3
Category Impurity
Parent API
Formula -
Mol. Wt.
(9H-fluoren-9-yl)methyl ((1S,2R)-1-hydroxy-1-phenylpropan-2-yl)carbamate chemical structure
Custom Synthesis

(9H-fluoren-9-yl)methyl ((1S,2R)-1-hydroxy-1-phenylpropan-2-yl)carbamate

CAT No. CS-O-51774
CAS No. 2380573-04-4
Category Impurity
Parent API .
Formula C24H23NO3
Mol. Wt. 373.45
(9-Oxo-4,5,6,7,8,9-hexahydro-[1,2,4]triazolo-[5,1-b]quinazolin-2-yl)-acetic acid chemical structure
Custom Synthesis

(9-Oxo-4,5,6,7,8,9-hexahydro-[1,2,4]triazolo-[5,1-b]quinazolin-2-yl)-acetic acid

CAT No. CS-M-10459
CAS No. 540514-18-9
Category Impurity
Parent API
Formula -
Mol. Wt.
(9-Oxo-9H-acridin-10-yl)-acetic acid chemical structure
Custom Synthesis

(9-Oxo-9H-acridin-10-yl)-acetic acid

CAT No. CS-M-06689
CAS No. 38609-97-1
Category Impurity
Parent API
Formula -
Mol. Wt.
(9R)-9-((methylamino)methyl)-6,6a-dihydro-4H-chromeno[7,6,5-cd]indol-8(9H)-one chemical structure
Custom Synthesis

(9R)-9-((methylamino)methyl)-6,6a-dihydro-4H-chromeno[7,6,5-cd]indol-8(9H)-one

CAT No. CS-O-64554
CAS No. -
Category Impurity
Parent API Ergotamine
Formula C16H16N2O2
Mol. Wt. 268.31
(9β,10α)-4-Chloro-Androst-4-ene-3,17-dione chemical structure
Custom Synthesis

(9β,10α)-4-Chloro-Androst-4-ene-3,17-dione

CAT No. CS-T-50557
CAS No. 6765-84-0
Category Impurity
Parent API
Formula -
Mol. Wt.
(9β,11β)-Epoxy Fluorometholone Acetate chemical structure
Custom Synthesis

(9β,11β)-Epoxy Fluorometholone Acetate

CAT No. CS-T-92246
CAS No. 83873-17-0
Category Impurity
Formula C24H30O5
Mol. Wt. 398.5
(9β,11β,16α)-21-Chloro-9,11-epoxy-17-hydroxy-16-methylpregn-4-ene-3,20-dione chemical structure
Custom Synthesis

(9β,11β,16α)-21-Chloro-9,11-epoxy-17-hydroxy-16-methylpregn-4-ene-3,20-dione

CAT No. CS-O-47849
CAS No. 2097798-14-4
Category Impurity
Parent API Ciclesonide
Formula C22H29ClO4
Mol. Wt. 392.92
(all-Z)-6,9,12,15,18-Heneicosapentaenoic Acid chemical structure
Custom Synthesis

(all-Z)-6,9,12,15,18-Heneicosapentaenoic Acid

CAT No. CS-T-25894
CAS No. 24257-10-1
Category Impurity
Formula C21H32O2
Mol. Wt. 316.5
(all-Z)-6,9,12,15,18-Heneicosapentaenoic Acid Methyl Ester chemical structure
Custom Synthesis

(all-Z)-6,9,12,15,18-Heneicosapentaenoic Acid Methyl Ester

CAT No. CS-T-78752
CAS No. 65919-53-1
Category Impurity
Formula -
Mol. Wt.
(All-Z)-8,11,14,17-Eicosatetraenoic Acid Ethyl Ester chemical structure
Custom Synthesis

(All-Z)-8,11,14,17-Eicosatetraenoic Acid Ethyl Ester

CAT No. CS-T-92530
CAS No. 123940-93-2
Category Impurity
Formula C22H36O2
Mol. Wt. 332.5
(a-R)-a--[[(1,1-dimethylethoxy)carbonyl]amino]-3-hydroxy-Tricyclo[3.3.1.13,7]decane-1-acetic acid chemical structure
Custom Synthesis

(a-R)-a--[[(1,1-dimethylethoxy)carbonyl]amino]-3-hydroxy-Tricyclo[3.3.1.13,7]decane-1-acetic acid

CAT No. CS-DV-00434
CAS No. 1334321-39-9
Category Impurity
Parent API Saxagliptin
Formula C17H27NO5
Mol. Wt. 325.4
(aR)-a-[[(1,1-Dimethylethoxy)carbonyl]amino]-benzeneacetic Acid chemical structure
Custom Synthesis

(aR)-a-[[(1,1-Dimethylethoxy)carbonyl]amino]-benzeneacetic Acid

CAT No. CS-T-53458
CAS No. 33125-05-2
Category Impurity
Parent API
Formula -
Mol. Wt.
(b, b-Dimethylacryl)shikonin chemical structure
Custom Synthesis

(b, b-Dimethylacryl)shikonin

CAT No. CS-T-102307
CAS No. 24502-79-2
Category Impurity
Parent API shikonin
Formula C21H22O6
Mol. Wt. 370.4
(Benzo[b]thiophen-3-yl)acetic acid chemical structure
Custom Synthesis

(Benzo[b]thiophen-3-yl)acetic acid

CAT No. CS-DV-00244
CAS No. 1131-09-5
Category Impurity
Parent API
Formula -
Mol. Wt.
(Benzoylmercapto)acetic acid chemical structure
Custom Synthesis

(Benzoylmercapto)acetic acid

CAT No. CS-O-43780
CAS No. 6398-74-9
Category Impurity
Parent API
Formula -
Mol. Wt.
(Benzyl R -1,2,3,4-tetrahydroisoquinoline-3-carboxylate  p -toluenesulfonic acid salt) chemical structure
Custom Synthesis

(Benzyl R -1,2,3,4-tetrahydroisoquinoline-3-carboxylate p -toluenesulfonic acid salt)

CAT No. CS-O-36814
CAS No. 227290-59-7
Category Impurity
Parent API -
Formula C24H25NO5S
Mol. Wt. 439.53
(Beta-Ala8)-Neurokinin A (4-10) chemical structure
Custom Synthesis

(Beta-Ala8)-Neurokinin A (4-10)

CAT No. CS-ED-13805
CAS No. 127633-71-0
Category Impurity
Parent API Neurokinin A
Formula C35H56N8O9S
Mol. Wt. 764.9
(Butyl 4-hydroxy-3,5-bis(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)benzoate) chemical structure
Custom Synthesis

(Butyl 4-hydroxy-3,5-bis(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)benzoate)

CAT No. CS-O-45123
CAS No. -
Category Impurity
Parent API Sitagliptin
Formula C23H24F6N8O3
Mol. Wt. 574.48
(Carbamoylcarbamoyl)-L-glutamic Acid chemical structure
Custom Synthesis

(Carbamoylcarbamoyl)-L-glutamic Acid

CAT No. CS-O-40278
CAS No. -
Category Impurity
Parent API Glutamic Acid
Formula C7H11N3O6
Mol. Wt. 233.18
(Cycloheptylamino)(oxo)acetic acid chemical structure
Custom Synthesis

(Cycloheptylamino)(oxo)acetic acid

CAT No. CS-M-46577
CAS No. 1018243-04-3
Category Impurity
Parent API
Formula -
Mol. Wt.

Impurity Products at Clearsynth

Browse available Impurity products from Clearsynth. These compounds support analytical research, quality control and pharmaceutical development.

Browse available compounds above or contact our team for custom synthesis and bulk requirements.

Done
RFQ Basket 0
Quick Enquiry
Tell us what you need
Quote Basket
Selected RFQ Items
Your RFQ basket is empty. Add a product block or copy a guided requirement here.