Pharmaceutical Intermediates

Heterocyclic Building Blocks

Nitrogen, oxygen and sulphur heterocycles, including pyridines, pyrimidines, indoles, piperazines and triazoles, for medicinal and process chemistry.

2,832 products11 sub-categories83 in stockCOA + SDS with every lot

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Propoxycarbazone

CAS: 145026-81-9
Formula: C₁₅H₁₈N₄O₇S
MW: 398.4 g/mol

ZX-047241

Propoxyphenyl Sildenafil

CAS: 877777-10-1
Formula: C₂₃H₃₂N₆O₄S
MW: 488.6 g/mol

ZX-042970

Propylene Thiourea

CAS: 2122-19-2
Formula: C₄H₈N₂S
MW: 116.19 g/mol

ZX-040537

Protoporphyrin IX, ≥95%

CAS: 553-12-8
Formula: C₃₄H₃₄N₄O₄
MW: 562.7 g/mol

ZX-011701

PU-H71 Trifluoroacetic Acid

CAS: 873436-91-0
Formula: C₁₈H₂₁IN₆O₂S
MW: 512.4 g/mol

ZX-044844

Puerarin

CAS: 3681-99-0
Formula: C₂₁H₂₀O₉
MW: 416.4 g/mol

ZX-039812

Pyrazinamide, 98%

CAS: 98-96-4
Formula: C₅H₅N₃O
MW: 123.11 g/mol

ZX-011050

Pyrazine

CAS: 290-37-9
Formula: C₄H₄N₂
MW: 80.09 g/mol

ZX-034300

Pyrazine-2-carboxylic acid, 99%

CAS: 98-97-5
Formula: C₅H₄N₂O₂
MW: 124.1 g/mol

ZX-011051

Pyrazole-4-boronic acid, ≥95%

CAS: 763120-58-7
Formula: C₃H₅BN₂O₂
MW: 111.9 g/mol

ZX-011703

Pyrazole, 98%

CAS: 288-13-1
Formula: C₃H₄N₂
MW: 68.08 g/mol

ZX-011702

Pyrazoxone

CAS: 108-34-9
Formula: C₈H₁₅N₂O₄P
MW: 234.19 g/mol

ZX-045022

Pyridin-2-ol, 99%

CAS: 72762-00-6
Formula: C₅H₅NO
MW: 95.1 g/mol

ZX-010939

Pyridin-3-yl(p-tolyl)methanone

CAS: 34950-04-4
Formula: C₁₃H₁₁NO
MW: 197.23 g/mol

ZX-040637

Pyridine hydrobromide, 98%

CAS: 18820-82-1
Formula: C₅H₆BrN
MW: 160.01 g/mol

ZX-010940

Pyridine hydrochloride, 98%

CAS: 628-13-7
Formula: C₅H₆ClN
MW: 115.56 g/mol

ZX-010941

Pyridine N-oxide, 95%+

CAS: 694-59-7
Formula: C₅H₅NO
MW: 95.1 g/mol

ZX-010942

Pyridine-2-aldoxime, extra pure >98%

CAS: 873-69-8
Formula: C₆H₆N₂O
MW: 122.12 g/mol

ZX-019010

Pyridine-2,5-dicarbonitrile

CAS: 20730-07-8
Formula: C₇H₃N₃
MW: 129.12 g/mol

ZX-034395

Pyridine-2,6-dicarboxylic acid, 98%

CAS: 499-83-2
Formula: C₇H₅NO₄
MW: 167.12 g/mol

ZX-010943

Pyridine-3-sulfonyl chloride

CAS: 16133-25-8
Formula: C₅H₄ClNO₂S
MW: 177.61 g/mol

ZX-031345

Pyridine-3,5-dicarboxylic acid, 98%

CAS: 499-81-0
Formula: C₇H₅NO₄
MW: 167.12 g/mol

ZX-010944

Pyridine-4-carbonyl azide

CAS: 4013-73-4
Formula: C₆H₄N₄O
MW: 148.12 g/mol

ZX-040263

Pyridine-4-Sulfonic Acid

CAS: 5402-20-0
Formula: C₅H₅NO₃S
MW: 159.17 g/mol

ZX-041137

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