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Pharmaceutical Intermediates

CoreyChem supplies heterocyclic intermediates for API and advanced-intermediate synthesis: pyridine and pyrimidine derivatives, piperazine and piperidine building blocks, indole, quinoline and related azaheterocycles.

Each batch is documented with a Certificate of Analysis upon request, and our custom synthesis program covers milligram to ton scale for intermediates not found in the catalog.

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2-Pyrazinylmethanol (CAS 10102-40-6) structure 2-Pyrazinylmethanol
CAS 10102-40-6 · C5H6N2O · MW 110.04801
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3-cyanopyridine (CAS 100-54-9) structure 3-cyanopyridine
CAS 100-54-9 · C6H4N2 · MW 104.037445
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Tetrahydrothiophen-3-one (CAS 1003-04-9) structure Tetrahydrothiophen-3-one
CAS 1003-04-9 · C4H6OS · MW 102.01394
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Thiolan-2-one (CAS 1003-10-7) structure Thiolan-2-one
CAS 1003-10-7 · C4H6OS · MW 102.01394
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4-Amino-6-chloro-2-(methylthio)pyrimidine (CAS 1005-38-5) structure 4-Amino-6-chloro-2-(methylthio)pyrimidine
CAS 1005-38-5 · C5H6ClN3S · MW 174.9971
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(RS)-CPP (CAS 100828-16-8) structure (RS)-CPP
CAS 100828-16-8 · C8H17N2O5P · MW 252.08751
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1,4-Bis(2-chloroethyl)piperazine (CAS 1009-85-4) structure 1,4-Bis(2-chloroethyl)piperazine
CAS 1009-85-4 · C8H16Cl2N2 · MW 210.06906
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Blue tetrazolium (CAS 101329-54-8) structure Blue tetrazolium
CAS 101329-54-8 · C40H36Cl2N8O2 · MW 730.2338
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2,5-Pyridinedicarboxylic acid (CAS 100-26-5) structure 2,5-Pyridinedicarboxylic acid
CAS 100-26-5 · C7H5NO4 · MW 167.02185
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4-Ethylmorpholine (CAS 100-74-3) structure 4-Ethylmorpholine
CAS 100-74-3 · C6H13NO · MW 115.09972
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Isothiazol-3(2H)-one (CAS 1003-07-2) structure Isothiazol-3(2H)-one
CAS 1003-07-2 · C3H3NOS · MW 100.99354
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3-phenyl-oxindole (CAS 100725-43-7) structure 3-phenyl-oxindole
CAS 100725-43-7 · C14H11NO · MW 209.08406
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5-BROMOINDOLE (CAS 10075-50-0) structure 5-BROMOINDOLE
CAS 10075-50-0 · C8H6BrN · MW 194.96835
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4-(pyrrolidin-1-yl)phenol (CAS 1008-97-5) structure 4-(pyrrolidin-1-yl)phenol
CAS 1008-97-5 · C10H13NO · MW 163.09972
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DRib (CAS 100937-52-8) structure DRib
CAS 100937-52-8 · C5H11NO3 · MW 133.0739
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1-(2,6-dimethylphenyl)piperazine (CAS 1012-91-5) structure 1-(2,6-dimethylphenyl)piperazine
CAS 1012-91-5 · C12H18N2 · MW 190.147
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1-Allylpyridinium bromide (CAS 10129-44-9) structure 1-Allylpyridinium bromide
CAS 10129-44-9 · C8H10BrN · MW 198.99966
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1-(2,5-Dimethylphenyl)piperazine (CAS 1013-25-8) structure 1-(2,5-Dimethylphenyl)piperazine
CAS 1013-25-8 · C12H18N2 · MW 190.147
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(5-nitro-1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)acetic acid (CAS 10146-89-1) structure (5-nitro-1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)acetic acid
CAS 10146-89-1 · C10H6N2O6 · MW 250.02258
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2-ETHYLPYRIDINE (CAS 100-71-0) structure 2-ETHYLPYRIDINE
CAS 100-71-0 · C7H9N · MW 107.0735
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5-(chloromethyl)-4-methyl-1,3-thiazole (CAS 10014-52-5) structure 5-(chloromethyl)-4-methyl-1,3-thiazole
CAS 10014-52-5 · C5H6ClNS · MW 146.99095
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2,8-Dibromodibenzofuran (CAS 10016-52-1) structure 2,8-Dibromodibenzofuran
CAS 10016-52-1 · C12H6Br2O · MW 323.87854
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2-BROMOTHIOPHENE (CAS 1003-09-4) structure 2-BROMOTHIOPHENE
CAS 1003-09-4 · C4H3BrS · MW 161.91388
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4-Methyloxazole-5-carbonitrile (CAS 1003-52-7) structure 4-Methyloxazole-5-carbonitrile
CAS 1003-52-7 · C5H4N2O · MW 108.032364
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3-methylpyridin-2-ol (CAS 1003-56-1) structure 3-methylpyridin-2-ol
CAS 1003-56-1 · C6H7NO · MW 109.052765
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2-Hydroxy-5-methylpyridine (CAS 1003-68-5) structure 2-Hydroxy-5-methylpyridine
CAS 1003-68-5 · C6H7NO · MW 109.052765
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2,4,6-Triaminopyrimidine (CAS 1004-38-2) structure 2,4,6-Triaminopyrimidine
CAS 1004-38-2 · C4H7N5 · MW 125.070145
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2-(methylthio)pyrimidine-4,6-diamine (CAS 1005-39-6) structure 2-(methylthio)pyrimidine-4,6-diamine
CAS 1005-39-6 · C5H8N4S · MW 156.04697
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4-Butylmorpholine (CAS 1005-67-0) structure 4-Butylmorpholine
CAS 1005-67-0 · C8H17NO · MW 143.13101
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5-Nitroso-2,4,6-triaminopyrimidine (CAS 1006-23-1) structure 5-Nitroso-2,4,6-triaminopyrimidine
CAS 1006-23-1 · C4H6N6O · MW 154.0603
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3-Ethyl-6-methyluracil (CAS 1006-24-2) structure 3-Ethyl-6-methyluracil
CAS 1006-24-2 · C7H10N2O2 · MW 154.07423
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5-Chloro-2-methylbenzothiazole (CAS 1006-99-1) structure 5-Chloro-2-methylbenzothiazole
CAS 1006-99-1 · C8H6ClNS · MW 182.99095
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N-Phenyl-4,5-dihydro-1,3-thiazol-2-amine (CAS 1009-70-7) structure N-Phenyl-4,5-dihydro-1,3-thiazol-2-amine
CAS 1009-70-7 · C9H10N2S · MW 178.05647
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Mebicar (CAS 10095-06-4) structure Mebicar
CAS 10095-06-4 · C8H14N4O2 · MW 198.11168
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Metronidazole acetic acid (CAS 1010-93-1) structure Metronidazole acetic acid
CAS 1010-93-1 · C6H7N3O4 · MW 185.04366
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2-(2-Hydroxyethyl)quinoline (CAS 1011-50-3) structure 2-(2-Hydroxyethyl)quinoline
CAS 1011-50-3 · C11H11NO · MW 173.08406
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Dibenzothiophene 5-oxide (CAS 1013-23-6) structure Dibenzothiophene 5-oxide
CAS 1013-23-6 · C12H8OS · MW 200.02959
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4-Amino-2,6-dichloropyrimidine (CAS 10132-07-7) structure 4-Amino-2,6-dichloropyrimidine
CAS 10132-07-7 · C4H3Cl2N3 · MW 162.9704
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4-VINYLPYRIDINE (CAS 100-43-6) structure 4-VINYLPYRIDINE
CAS 100-43-6 · C7H7N · MW 105.057846
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1-Nitrosopiperidine (CAS 100-75-4) structure 1-Nitrosopiperidine
CAS 100-75-4 · C5H10N2O · MW 114.079315
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2,1-benzisothiazole (CAS 10016-27-0) structure 2,1-benzisothiazole
CAS 10016-27-0 · C7H5NS · MW 135.01427
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2-Thiophenecarbonitrile (CAS 1003-31-2) structure 2-Thiophenecarbonitrile
CAS 1003-31-2 · C5H3NS · MW 108.99862
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Ethyl 2-bromothiazole-4-carboxylate (CAS 100367-77-9) structure Ethyl 2-bromothiazole-4-carboxylate
CAS 100367-77-9 · C6H6BrNO2S · MW 234.93027
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2,4,5,6-Tetraaminopyrimidine (CAS 1004-74-6) structure 2,4,5,6-Tetraaminopyrimidine
CAS 1004-74-6 · C4H8N6 · MW 140.08104
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Methyl 3-methylisoxazole-5-carboxylate (CAS 1004-96-2) structure Methyl 3-methylisoxazole-5-carboxylate
CAS 1004-96-2 · C6H7NO3 · MW 141.04259
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pyridin-4-ylmethyl acetate (CAS 1007-48-3) structure pyridin-4-ylmethyl acetate
CAS 1007-48-3 · C8H9NO2 · MW 151.06332
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2-PHENYLPYRIDINE (CAS 1008-89-5) structure 2-PHENYLPYRIDINE
CAS 1008-89-5 · C11H9N · MW 155.0735
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1-(4-Pyridyl)piperazine (CAS 1008-91-9) structure 1-(4-Pyridyl)piperazine
CAS 1008-91-9 · C9H13N3 · MW 163.11095
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Packaging: Sample packaging: 25g / 100g / 500g / 1kg foil pouches. Special products may require customized packaging — confirmed per inquiry.
Lead Time: Most products are manufactured to order; in-stock items are limited. Lead time varies by product — typically weeks to months — and is confirmed per inquiry.

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Frequently Asked Questions

What is the minimum order quantity?

Most products have a minimum of 1kg. Research quantities may be available upon request.

Do you provide COA (Certificate of Analysis)?

Yes, COA is available for all products upon request.

What is the lead time?

Most products are manufactured to order; in-stock items are limited. Lead time varies by product (typically weeks to months) and is confirmed per inquiry.

Do you offer custom synthesis?

Yes. CoreyChem provides custom synthesis from milligram to ton scale. Send your target structure or CAS number to receive a proposal.