Heterocyclic Building Blocks

Pyrimidines, Pyrazines & Pyridazines

Chloropyrimidines, aminopyrimidines, uracils, pyrazines and pyridazines for nucleoside, kinase inhibitor, antiviral and agrochemical synthesis in research and scale-up.

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Sodium sulfadiazine, 99%

CAS: 547-32-0
Formula: C₁₀H₉N₄NaO₂S
MW: 272.26 g/mol

ZX-011053

Sulfadiazine, 98%

CAS: 68-35-9
Formula: C₁₀H₁₀N₄O₂S
MW: 250.28 g/mol

ZX-011054

Sulfamerazine, ≥99%

CAS: 127-79-7
Formula: C₁₁H₁₂N₄O₂S
MW: 264.31 g/mol

ZX-011055

Sulfamethazine, 99%

CAS: 57-68-1
Formula: C₁₂H₁₄N₄O₂S
MW: 278.33 g/mol

ZX-011056

Sulfisomidine

CAS: 515-64-0
Formula: C₁₂H₁₄N₄O₂S
MW: 278.33 g/mol

ZX-035801

Sulfometuron

CAS: 74223-56-6
Formula: C₁₄H₁₄N₄O₅S
MW: 350.35 g/mol

ZX-041405

Sulpha chloropyrazine sodium

CAS: 23307-72-4
Formula: C₁₀H₈ClN₄NaO₂S
MW: 306.7 g/mol

ZX-034603

tert-Butyl 4-(2-chloropyrimidin-4-yl)piperidine-1-carboxylate

CAS: 1001754-82-0
Formula: C₁₄H₂₀ClN₃O₂
MW: 297.78 g/mol

ZX-043858

tert-Butylpyrazine

CAS: 32741-11-0
Formula: C₈H₁₂N₂
MW: 136.19 g/mol

ZX-035776

Tetra-2-pyridinylpyrazine, 97%

CAS: 25005-97-4
Formula: C₂₄H₁₆N₆
MW: 388.4 g/mol

ZX-011057

Tetrahydrofolic acid, ≥65%

CAS: 135-16-0
Formula: C₁₉H₂₃N₇O₆
MW: 445.4 g/mol

ZX-011058

Thiosildenafil

CAS: 479073-79-5
Formula: C₂₂H₃₀N₆O₃S₂
MW: 490.6 g/mol

ZX-045432

Thymine, 99%+

CAS: 65-71-4
Formula: C₅H₆N₂O₂
MW: 126.11 g/mol

ZX-011059

Tyk2-IN-8

CAS: 2127109-84-4
Formula: C₂₀H₁₇N₉
MW: 383.4 g/mol

ZX-044470

Uridine 5′-monophosphate disodium salt, ≥99%

CAS: 3387-36-8
Formula: C₉H₁₁N₂Na₂O₉P
MW: 368.14 g/mol

ZX-011060

Uridine 5′-monophosphate disodium salt, EP

CAS: 3387-36-8
Formula: C₉H₁₁N₂Na₂O₉P
MW: 368.14 g/mol

ZX-038769

Uridine 5′-monophosphate, ≥98%

CAS: 58-97-9
Formula: C₉H₁₃N₂O₉P
MW: 324.18 g/mol

ZX-011061

Uridine-5'-diphosphate sodium salt (UDP), From yeast

CAS: 27821-45-0
Formula: C₉H₁₂N₂Na₂O₁₂P₂
MW: 448.12 g/mol

ZX-018667

Violuric acid>97% (t), >97%

CAS: 26351-19-9
Formula: C₄H₅N₃O₅
MW: 175.1 g/mol

ZX-018796

Xanthopterin

CAS: 119-44-8
Formula: C₆H₅N₅O₂
MW: 179.14 g/mol

ZX-041388

α,3-Dimethyl-2-quinoxalinemethanol 1,4-Dioxide

CAS: 104097-59-8
Formula: C₁₁H₁₂N₂O₃
MW: 220.22 g/mol

ZX-043915

α,3-Dimethyl-2-quinoxalinemethanol 4-Oxide

CAS: 1226491-98-0
Formula: C₁₁H₁₂N₂O₂
MW: 204.22 g/mol

ZX-043916

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