Heterocyclic Building Blocks

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1-Methyl-2-pyrrolidinone, distilled

Hazmat

Purity:

≥ 99.5% (Assay)

Synonym:

N-Methyl-2-ketopyrrolidine

Hazmat

Catalog Number:

00741

CAS Number:

872-50-4

Purity Limit:

≥ 99.5% (Assay)

MDL NO:

MFCD00003193

Molecular Formula:

C₅H₉NO

Molecular Weight:

99.13

Specification Sheet SDS
5-(Ethylthio)-1H-tetrazole

Hazmat

Purity:

≥ 99% (Assay by titration)

Synonym:

5-Ethylsulfanyl-1H-tetrazole

Hazmat

Catalog Number:

01881

CAS Number:

89797-68-2

Purity Limit:

≥ 99% (Assay by titration)

MDL NO:

MFCD00068733

Molecular Formula:

C₃H₆N₄S

Molecular Weight:

130.18

Specification Sheet SDS
Imidazole

Hazmat

Purity:

≥ 99% (Assay)

Synonym:

1,3-Diaza-2,4-cyclopentadiene

Hazmat

Catalog Number:

00418

CAS Number:

288-32-4

Purity Limit:

≥ 99% (Assay)

MDL NO:

MFCD00005183

Molecular Formula:

C₃H₄N₂

Molecular Weight:

68.08

Specification Sheet SDS
1-Methyl-2-pyrrolidinone, distilled

Hazmat

Grade:

ACS reagent

Purity:

≥ 99% (GC)

Synonym:

N-Methyl-2-ketopyrrolidine

Hazmat

Catalog Number:

30063

Grade:

ACS reagent

CAS Number:

872-50-4

Purity Limit:

≥ 99% (GC)

MDL NO:

MFCD00003193

Molecular Formula:

C₅H₉NO

Molecular Weight:

99.13

Specification Sheet SDS
Piperazine,anhydrous

Hazmat

Purity:

≥ 99% (GC)

Synonym:

1,4-Diazacyclohexane

Hazmat

Catalog Number:

06899

CAS Number:

110-85-0

Purity Limit:

≥ 99% (GC)

MDL NO:

MFCD00005953

Molecular Formula:

C₄H₁₀N₂

Molecular Weight:

86.14

Specification Sheet SDS
N-Methylmorpholine

Hazmat

Purity:

≥ 99% (Assay)

Synonym:

4-Methylmorpholine

Hazmat

Catalog Number:

02333

CAS Number:

109-02-4

Purity Limit:

≥ 99% (Assay)

MDL NO:

MFCD00006175

Molecular Formula:

C₅H₁₁NO

Molecular Weight:

101.15

Specification Sheet SDS
2,3,5-Triphenyl-2H-tetrazolium chloride

Hazmat

Purity:

≥ 99% (Assay)

Synonym:

Tetrazolium red

Hazmat

Catalog Number:

01646

CAS Number:

298-96-4

Purity Limit:

≥ 99% (Assay)

MDL NO:

MFCD00011963

Molecular Formula:

C₁₉H₁₅N₄Cl

Molecular Weight:

334.81

Specification Sheet SDS
1-Methylimidazole

Hazmat

Purity:

≥ 99% (GC)

Synonym:

N-Methylimidazole

Hazmat

Catalog Number:

00526

CAS Number:

616-47-7

Purity Limit:

≥ 99% (GC)

MDL NO:

MFCD00005292

Molecular Formula:

C₄H₆N₂

Molecular Weight:

82.11

Specification Sheet SDS
Pyrrolidine

Hazmat

Purity:

≥ 99% (GC)

Synonym:

Tetramethyleneimine

Hazmat

Catalog Number:

43864

CAS Number:

123-75-1

Purity Limit:

≥ 99% (GC)

MDL NO:

MFCD00005249

Molecular Formula:

C₄H₉N

Molecular Weight:

71.12

Specification Sheet SDS
Tryptamine

Purity:

≥ 99% (HPLC)

Synonym:

1H-Indole-3-ethanamine

Catalog Number:

21918

CAS Number:

61-54-1

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00005661

Molecular Formula:

C₁₀H₁₂N₂

Molecular Weight:

160.22

Specification Sheet SDS
4-Iodonitrotetrazolium violet

Purity:

≥ 99% (HPLC)

Synonym:

2-(4-Iodophenyl)-3-(4-nitrophenyl)-5-phenyltetrazolium chloride

Catalog Number:

00193

CAS Number:

146-68-9

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00011961

Molecular Formula:

C₁₉H₁₃ClIN₅O₂

Molecular Weight:

505.7

Specification Sheet SDS
Uracil

Purity:

≥ 99% (HPLC)

Synonym:

2,4(1H,3H)-Pyrimidinedione

Catalog Number:

31792

CAS Number:

66-22-8

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00068245

Molecular Formula:

C₄H₄N₂O₂

Molecular Weight:

112.09

Specification Sheet SDS
4-Bromo-7-azaindole

Hazmat

Purity:

≥ 97%

Synonym:

4-Bromo-1H-pyrrolo[2,3-b]pyridine cf0

Hazmat

Catalog Number:

24732

CAS Number:

348640-06-2

Purity Limit:

≥ 97%

MDL NO:

MFCD08272233

Molecular Formula:

C₇H₅BrN₂

Molecular Weight:

197.04

Specification Sheet SDS
Morpholine

Hazmat

Purity:

≥ 99% (GC)

Hazmat

Catalog Number:

14091

CAS Number:

110-91-8

Purity Limit:

≥ 99% (GC)

MDL NO:

MFCD00005972

Molecular Formula:

C₄H₉NO

Molecular Weight:

87.12

Specification Sheet SDS
2-Methylindole

Purity:

≥ 99% (Assay)

Synonym:

α-Methylindole

Catalog Number:

12992

CAS Number:

95-20-5

Purity Limit:

≥ 99% (Assay)

MDL NO:

MFCD00005616

Molecular Formula:

C₉H₉N

Molecular Weight:

131.18

Specification Sheet SDS
N-Acetyl-5-methoxytryptamine

Grade:

Meets USP Specification

Purity:

≥ 99% (HPLC)

Synonym:

Melatonin

Catalog Number:

09492

Grade:

Meets USP Specification

CAS Number:

73-31-4

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00005655

Molecular Formula:

C₁₃H₁₆N₂O₂

Molecular Weight:

232.28

Specification Sheet SDS
5-(Methylthio)-1H-tetrazole

Purity:

≥ 99% (HPLC)

Catalog Number:

01399

CAS Number:

29515-99-9

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00068726

Molecular Formula:

C₂H₄N₄S

Molecular Weight:

116.15

Specification Sheet SDS
Hexamethylenetetramine

Hazmat

Purity:

99 - 100%

Synonym:

Hexamine

Hazmat

Catalog Number:

01234

CAS Number:

100-97-0

Purity Limit:

99 - 100%

MDL NO:

MFCD00006895

Molecular Formula:

C₆H₁₂N₄

Molecular Weight:

140.2

Specification Sheet SDS
Indole-3-acetic acid

Purity:

≥ 98%

Synonym:

IAA

Catalog Number:

00188

CAS Number:

87-51-4

Purity Limit:

≥ 98%

MDL NO:

MFCD00005636

Molecular Formula:

C₁₀H₉NO₂

Molecular Weight:

175.19

Specification Sheet SDS
Adenine hydrochloride

Purity:

≥ 99% (Assay)

Synonym:

6-Aminopurine hydrochoride

Catalog Number:

00005

CAS Number:

2922-28-3, 6055-72-7

Purity Limit:

≥ 99% (Assay)

MDL NO:

MFCD00075782

Molecular Formula:

C₅H₅N₅·HCl

Molecular Weight:

171.6

Specification Sheet SDS
3-Cyanopyridine

Purity:

≥ 99% (GC)

Synonym:

3-Pyridinecarbonitrile

Catalog Number:

46568

CAS Number:

100-54-9

Purity Limit:

≥ 99% (GC)

MDL NO:

MFCD00006372

Molecular Formula:

C₆H₄N₂

Molecular Weight:

104.11

SDS
5-Iodouracil

Purity:

≥ 98% (Assay)

Catalog Number:

44839

CAS Number:

696-07-1

Purity Limit:

≥ 98% (Assay)

MDL NO:

MFCD00006020

Molecular Formula:

C₄H₃IN₂O₂

Molecular Weight:

237.98

Specification Sheet SDS
5-Amino-4,6-dichloro-2-(propylthio)pyrimidine

Purity:

≥ 98% (GC)

Catalog Number:

44838

CAS Number:

145783-15-9

Purity Limit:

≥ 98% (GC)

MDL NO:

MFCD16875503

Molecular Formula:

C₇H₉Cl₂N₃S

Molecular Weight:

238.13

Specification Sheet SDS
4,6-Dimethoxy-2-(methylsulfonyl)pyrimidine

Purity:

≥ 98% (GC)

Catalog Number:

43704

CAS Number:

113583-35-0

Purity Limit:

≥ 98% (GC)

MDL NO:

MFCD00672151

Molecular Formula:

C₇H₁₀N₂O₄S

Molecular Weight:

218.23

Specification Sheet SDS
Piperazine dihydrochloride monohydrate

Purity:

≥ 98%

Catalog Number:

43353

CAS Number:

142-64-3

Purity Limit:

≥ 98%

MDL NO:

MFCD00012754

Molecular Formula:

C₄H₁₀N₂·2HCl·H₂O

Molecular Weight:

177.07

Specification Sheet SDS
5-Benzotriazolecarboxylic acid

Purity:

≥ 99% (HPLC)

Synonym:

5-Carboxybenzotriazole

Catalog Number:

42705

CAS Number:

23814-12-2

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00012318

Molecular Formula:

C₇H₅N₃O₂

Molecular Weight:

163.14

Specification Sheet SDS
Fenbendazole

Grade:

meets BP specification

Purity:

98.0 - 101.0% (Assay by titration)

Synonym:

Methyl [5-(phenylthio)benzimidazol-2-yl]carbamate

Catalog Number:

42598

Grade:

meets BP specification

CAS Number:

43210-67-9

Purity Limit:

98.0 - 101.0% (Assay by titration)

MDL NO:

MFCD00144301

Molecular Formula:

C₁₅H₁₃N₃O₂S

Molecular Weight:

299.35

Specification Sheet SDS
o-Sulfobenzimide

Purity:

≥ 99% (Assay by titration, HPLC)

Synonym:

o-Benzoic Sulfimide

Catalog Number:

39306

CAS Number:

81-07-2

Purity Limit:

≥ 99% (Assay by titration, HPLC)

MDL NO:

MFCD00005866

Molecular Formula:

C₇H₅NO₃S

Molecular Weight:

183.18

Specification Sheet SDS
3-Hydroxy-5-methylisoxazole

Purity:

≥ 98% (HPLC)

Synonym:

Hymexazol

Catalog Number:

38423

CAS Number:

10004-44-1

Purity Limit:

≥ 98% (HPLC)

MDL NO:

MFCD00144468

Molecular Formula:

C₄H₅NO₂

Molecular Weight:

99.09

Specification Sheet SDS
Antipyrine

Purity:

≥ 99% (Assay by titration, GC)

Synonym:

2,3-Dimethyl-1-phenyl-5-pyrazolone

Catalog Number:

37783

CAS Number:

60-80-0

Purity Limit:

≥ 99% (Assay by titration, GC)

MDL NO:

MFCD00003146

Molecular Formula:

C₁₁H₁₂N₂O

Molecular Weight:

188.23

Specification Sheet SDS
5,5-Dimethyl-1-pyrroline N-oxide

Purity:

≥ 97% (NMR)

Synonym:

5,5-Dimethyl-1-pyrroline-1-oxide

Catalog Number:

37375

CAS Number:

3317-61-1

Purity Limit:

≥ 97% (NMR)

MDL NO:

MFCD00005279

Molecular Formula:

C₆H₁₁NO

Molecular Weight:

113.16

Specification Sheet SDS
Albendazole

Purity:

98.5 - 102.0% (Assay by titration)

Synonym:

Methyl 5-(propylthio)-2-benzimidazolecarbamate

Catalog Number:

35327

CAS Number:

54965-21-8

Purity Limit:

98.5 - 102.0% (Assay by titration)

MDL NO:

MFCD00083232

Molecular Formula:

C₁₂H₁₅N₃O₂S

Molecular Weight:

265.33

Specification Sheet SDS
2,3,5,6-Tetramethylpyrazine

Grade:

FG, KOSHER, FEMA 3237

Purity:

≥ 99% (Assay)

Synonym:

Tetramethyl-2,3,5,6 pyrazine

Catalog Number:

34981

Grade:

FG, KOSHER, FEMA 3237

CAS Number:

1124-11-4

Purity Limit:

≥ 99% (Assay)

MDL NO:

MFCD00006146

Molecular Formula:

C₈H₁₂N₂

Molecular Weight:

136.19

Specification Sheet SDS
5-Methylfurfural

Hazmat

Grade:

Natural, FG, KOSHER, FEMA 2702

Purity:

99 - 100% (GC)

Synonym:

5-Methyl-2-furaldehyde

Hazmat

Catalog Number:

34665

Grade:

Natural, FG, KOSHER, FEMA 2702

CAS Number:

620-02-0

Purity Limit:

99 - 100% (GC)

MDL NO:

MFCD00003232

Molecular Formula:

C₆H₆O₂

Molecular Weight:

150.22

Specification Sheet SDS
Indole

Hazmat

Grade:

FG, KOSHER, FEMA 2593

Purity:

≥ 99% (GC)

Synonym:

1H-Benzo[b]pyrrole

Hazmat

Catalog Number:

34393

Grade:

FG, KOSHER, FEMA 2593

CAS Number:

120-72-9

Purity Limit:

≥ 99% (GC)

MDL NO:

MFCD00005607

Molecular Formula:

C₈H₇N

Molecular Weight:

117.15

Specification Sheet SDS
5,7-Dichloro-8-quinolinol

Purity:

≥ 98% (GC)

Synonym:

5,7-Dichloro-8-hydroxyquinoline

Catalog Number:

32052

CAS Number:

773-76-2

Purity Limit:

≥ 98% (GC)

MDL NO:

MFCD00006786

Molecular Formula:

C₉H₅Cl₂NO

Molecular Weight:

214.05

Specification Sheet SDS
Trimorpholinophosphine oxide

Purity:

≥ 98% (HPLC)

Synonym:

Phosphoric acid trimorpholide

Catalog Number:

31287

CAS Number:

4441-12-7

Purity Limit:

≥ 98% (HPLC)

MDL NO:

MFCD00047406

Molecular Formula:

C₁₂H₂₄N₃O₄P

Molecular Weight:

305.31

Specification Sheet SDS
Allantoin

Grade:

meets USP specifications

Purity:

98.5-101.0% (Assay)

Synonym:

5-Ureidohydantoin

Catalog Number:

30702

Grade:

meets USP specifications

CAS Number:

97-59-6

Purity Limit:

98.5-101.0% (Assay)

MDL NO:

MFCD00005260

Molecular Formula:

C₄H₆N₄O₃

Molecular Weight:

158.12

Specification Sheet SDS
3-Amino-1,2,4-triazole-5-thiol

Purity:

≥ 98% (HPLC)

Catalog Number:

29088

CAS Number:

16691-43-3

Purity Limit:

≥ 98% (HPLC)

MDL NO:

MFCD00005231

Molecular Formula:

C₂H₄N₄S

Molecular Weight:

116.15

Specification Sheet SDS
2-Mercaptobenzimidazole

Hazmat

Purity:

≥ 99.5%

Hazmat

Catalog Number:

28342

CAS Number:

583-39-1

Purity Limit:

≥ 99.5%

MDL NO:

MFCD00005593

Molecular Formula:

C₇H₆N₂S

Molecular Weight:

150.2

Specification Sheet SDS
4-Bromopyridine hydrochloride

Purity:

≥ 99% (HPLC)

Catalog Number:

28252

CAS Number:

19524-06-2

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00012828

Molecular Formula:

C₅H₄BrN·HCl

Molecular Weight:

194.46

Specification Sheet SDS
5-Methyl-2H-tetrazole

Purity:

≥ 99% (HPLC)

Catalog Number:

28154

CAS Number:

4076-36-2

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00185824

Molecular Formula:

C₂H₄N₄

Molecular Weight:

84.08

Specification Sheet SDS
4-Morpholinoaniline

Purity:

≥ 99% (GC)

Catalog Number:

28105

CAS Number:

2524-67-6

Purity Limit:

≥ 99% (GC)

MDL NO:

MFCD00006169

Molecular Formula:

C₁₀H₁₄N₂O

Molecular Weight:

178.0

Specification Sheet SDS
2-Ethyl-4-methyl-1H-imidazole-1-propanenitrile

Purity:

≥ 95% (GC)

Synonym:

1-(2-Cyanoethyl)-2-ethyl-4-methylimidazole

Catalog Number:

27687

CAS Number:

23996-25-0

Purity Limit:

≥ 95% (GC)

MDL NO:

MFCD00051492

Molecular Formula:

C₉H₁₃N₃

Molecular Weight:

163.22

Specification Sheet SDS
2-Amino-1H-benzimidazole

Purity:

≥ 99% (HPLC)

Synonym:

2-Aminobenzimidazole

Catalog Number:

26960

CAS Number:

934-32-7

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00005596

Molecular Formula:

C₇H₇N₃

Molecular Weight:

133.15

Specification Sheet SDS
2-Methylimidazole

Hazmat

Purity:

≥ 99% (GC)

Synonym:

2-Methylglyoxaline

Hazmat

Catalog Number:

26928

CAS Number:

693-98-1

Purity Limit:

≥ 99% (GC)

MDL NO:

MFCD00005190

Molecular Formula:

C₄H₆N₂

Molecular Weight:

82.11

Specification Sheet SDS
1,3,4-Thiadiazole-2,5-dithiol

Hazmat

Purity:

≥ 98% (Assay by titration)

Synonym:

2,5-Dimercaptothiadiazole

Hazmat

Catalog Number:

26857

CAS Number:

1072-71-5

Purity Limit:

≥ 98% (Assay by titration)

MDL NO:

MFCD00003103

Molecular Formula:

C₂H₂N₂S₃

Molecular Weight:

150.25

Specification Sheet SDS
2,2,6,6-Tetramethylpiperidine

Hazmat

Purity:

≥ 99% (GC)

Synonym:

Norpempidine

Hazmat

Catalog Number:

24504

CAS Number:

768-66-1

Purity Limit:

≥ 99% (GC)

MDL NO:

MFCD00005985

Molecular Formula:

C₉H₁₉N

Molecular Weight:

141.26

Specification Sheet SDS
2,3-Dimethylindole

Purity:

≥ 98% (HPLC)

Synonym:

2,3-Dimethyl-1H-indole

Catalog Number:

22059

CAS Number:

91-55-4

Purity Limit:

≥ 98% (HPLC)

MDL NO:

MFCD00005617

Molecular Formula:

C₁₀H₁₁N

Molecular Weight:

145.2

Specification Sheet SDS
2,3,3-Trimethyl-4,5-benzo-3H-indole

Purity:

≥ 99% (HPLC)

Synonym:

1,1,2-Trimethyl-1H-benzo[e]indole

Catalog Number:

22010

CAS Number:

41532-84-7

Purity Limit:

≥ 99% (HPLC)

MDL NO:

MFCD00082627

Molecular Formula:

C₁₅H₁₅N

Molecular Weight:

209.29

Specification Sheet SDS

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