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
Categories / Impurity

Impurity Products

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

Showing 15529-15552 of 27575 products
All In Stock Custom Synthesis
D-Isomer of Levomefolate Calcium chemical structure
Custom Synthesis

D-Isomer of Levomefolate Calcium

CAT No. CS-O-62909
CAS No. -
Category Impurity
Parent API Levomefolate
Formula C40H52CaN14O12
Mol. Wt. 961.02
Distearyl Fumarate chemical structure
Custom Synthesis

Distearyl Fumarate

CAT No. CS-O-57258
CAS No. 7283-68-3
Category Impurity
Parent API .
Formula C40H76O4
Mol. Wt. 621.03
Disulfiram EP Impurity B(free base) chemical structure
Custom Synthesis

Disulfiram EP Impurity B(free base)

CAT No. CS-EO-03492
CAS No. 147-84-2
Category Impurity
Parent API Disulfiram
Formula C5H11NS2
Mol. Wt. 149.3
Disulfiram Impurity 1 chemical structure
Custom Synthesis

Disulfiram Impurity 1

CAT No. CS-T-33605
CAS No. 145195-14-8
Category Impurity
Parent API Disulfiram
Formula C6H13NOS2
Mol. Wt. 179.30
Di-tert-butyl ((S)-6-((2S,3R)-2-methyl-3-phenylaziridin-1-yl)-6-oxohexane-1,5-diyl)dicarbamatei chemical structure
Custom Synthesis

Di-tert-butyl ((S)-6-((2S,3R)-2-methyl-3-phenylaziridin-1-yl)-6-oxohexane-1,5-diyl)dicarbamatei

CAT No. CS-O-53541
CAS No. 2100310-79-8
Category Impurity
Parent API .
Formula C25H39N3O5
Mol. Wt. 461.59
Di-tert-butyl 2,2'-(4,10-bis(6-hydroxy-2,2-dimethyl-1,3-dioxepan-5-yl)-1,4,7,10-tetraazacyclododecane-1,7-diyl)diacetate chemical structure
Custom Synthesis

Di-tert-butyl 2,2'-(4,10-bis(6-hydroxy-2,2-dimethyl-1,3-dioxepan-5-yl)-1,4,7,10-tetraazacyclododecane-1,7-diyl)diacetate

CAT No. CS-O-38563
CAS No. 245486-50-4
Category Impurity
Parent API
Formula C34H64N4O10
Mol. Wt. 688.89
Di-tert-butyl 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate chemical structure
Custom Synthesis

Di-tert-butyl 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate

CAT No. CS-DV-03566
CAS No. 55536-71-5
Category Impurity
Parent API
Formula -
Mol. Wt.
di-tert-Butyl 4,4'-(6,6'-((8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-2,6-diyl)bis(azanediyl))bis(pyridine-6,3-diyl))bis(piperazine-1-carboxylate) chemical structure
Custom Synthesis

di-tert-Butyl 4,4'-(6,6'-((8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidine-2,6-diyl)bis(azanediyl))bis(pyridine-6,3-diyl))bis(piperazine-1-carboxylate)

CAT No. CS-TA-84116
CAS No. 2206135-30-8
Category Impurity
Parent API Palbociclib
Formula C41H55N11O5
Mol. Wt. 781.95
Di-tert-butyl nitroxide chemical structure
Custom Synthesis

Di-tert-butyl nitroxide

CAT No. CS-O-32567
CAS No. 2406-25-9
Category Impurity
Parent API
Formula C8H18NO
Mol. Wt. 144.23
Di-tert-butyl(2,4,6-triisopropyl-3,6-dimethoxy-[1,1-biphenyl]-2-yl)phosphine chemical structure
Custom Synthesis

Di-tert-butyl(2,4,6-triisopropyl-3,6-dimethoxy-[1,1-biphenyl]-2-yl)phosphine

CAT No. CS-DV-03570
CAS No. 1160861-53-9
Category Impurity
Parent API
Formula -
Mol. Wt.
Dithiazole Carbonate Impurity chemical structure
Custom Synthesis

Dithiazole Carbonate Impurity

CAT No. CS-O-61390
CAS No.
Category Impurity
Parent API Dithiazole
Formula C9H9N3O2S2
Mol. Wt. 255.31
Dithiobutylamine chemical structure
Custom Synthesis

Dithiobutylamine

CAT No. CS-T-53903
CAS No. 1363594-47-1
Category Impurity
Parent API
Formula -
Mol. Wt.
DiTHP-Travoprost chemical structure
Custom Synthesis

DiTHP-Travoprost

CAT No. CS-O-52687
CAS No.
Category Impurity
Parent API Travoprost
Formula C31H43F3O7
Mol. Wt. 584.66
DiTHP-Travoprost chemical structure
Custom Synthesis

DiTHP-Travoprost

CAT No. CS-O-52689
CAS No. 1373876-51-7
Category Impurity
Parent API Travoprost
Formula C36H51F3O8
Mol. Wt. 668.78
Dithranol Impurity C chemical structure
Custom Synthesis

Dithranol Impurity C

CAT No. CS-O-63691
CAS No. 31991-54-5
Category Impurity
Parent API Dithranol
Formula C28H18O6
Mol. Wt. 450.45
DL-​erythro-​3-​(3,​4-​Dihydroxyphenyl)​serine chemical structure
Custom Synthesis

DL-​erythro-​3-​(3,​4-​Dihydroxyphenyl)​serine

CAT No. CS-O-32724
CAS No. 16322-99-9
Category Impurity
Parent API Droxidopa
Formula C9H11NO5
Mol. Wt. 213.2
DL-alpha-Tocopherol Impurity-C chemical structure
Custom Synthesis

DL-alpha-Tocopherol Impurity-C

CAT No. CS-O-50047
CAS No. 90510-39-7
Category Impurity
Parent API Tocopherol
Formula C30H52O2
Mol. Wt. 444.73
dl-cis-Diltiazem chemical structure
Custom Synthesis

dl-cis-Diltiazem

CAT No. CS-O-46574
CAS No. 56209-45-1
Category Impurity
Parent API Diltiazem
Formula C22H26N2O4S
Mol. Wt. 414.5
DL-Erythro Ritalinic Acid chemical structure
Custom Synthesis

DL-Erythro Ritalinic Acid

CAT No. CS-T-61161
CAS No. 783256-74-6
Category Impurity
Parent API Methylphenidate
Formula C13H17NO2
Mol. Wt. 219.28
DL-Erythro Ritalinic Acid Hydrochloride chemical structure
Custom Synthesis

DL-Erythro Ritalinic Acid Hydrochloride

CAT No. CS-O-66981
CAS No. 19130-92-8
Category Impurity
Parent API Ritalinic acid
Formula C13H18ClNO2
Mol. Wt. 255.74
D-Leu-Leu-Arg-Pro-NHEt chemical structure
Custom Synthesis

D-Leu-Leu-Arg-Pro-NHEt

CAT No. CS-O-43322
CAS No. 1642799-36-7
Category Impurity
Parent API Leuprolide
Formula C25H48N8O4
Mol. Wt. 524.70
DL-Glyceraldehyde 3-Phosphate chemical structure
Custom Synthesis

DL-Glyceraldehyde 3-Phosphate

CAT No. CS-T-78657
CAS No. 591-59-3
Category Impurity
Parent API
Formula -
Mol. Wt.
DL-Homocysteine chemical structure
Custom Synthesis

DL-Homocysteine

CAT No. CS-O-14098
CAS No. 454-29-5
Category Impurity
Parent API Erdosteine
Formula C4H9NO2S
Mol. Wt. 135.2
DL-Homocysteine Thiolactone chemical structure
Custom Synthesis

DL-Homocysteine Thiolactone

CAT No. CS-P-07516
CAS No. 10593-85-8
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.