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Ultra-high purity pharmaceutical intermediates

Howei Pharm provides customized composite services of the research-level pouch packaging

more than 15000 kinds of products of micromolecule building blocks

Indazole

53857-57-1
5-Bromo-1H-indazole 97%

1187595-85-2
2-[1-(Ethanesulfonyl)azetidin-3-ylidene]acetonitrile 97%

943060-59-1
tert-Butyl azetidin-3-yl(methyl)carbamate hydrochloride ≥95%

159749-28-7
1-(tert-Butoxycarbonyl)azetidine-2-carboxylic acid 95%

497160-14-2
3-Azetidineacetic acid, 1-[(1,1-dimethylethoxy)carbonyl]-, methyl ester >95%

757239-60-4
Methyl 1-Cbz-azetidine-3-carboxylate >98%

934664-41-2
tert-Butyl 3-Methyleneazetidine-1-carboxylate >95%

148644-09-1
3-Methoxyazetidine hydrochloride 95%

Tetrahydropyran

25637-18-7
4-Iodo-tetrahydro-2H-pyran >95%

55628-54-1
3,4,6-Tri-O-benzyl-D-glucal 98%

1232060-77-3
trans-4-amino-3-(methoxy)tetrahydropyran 98%

103260-44-2
Ethyl tetrahydropyranyl-4-acetate 98%

110238-91-0
Methyl tetrahydro-2H-pyran-4-carboxylate 98%

61363-56-2
2H-Pyran-3,5(4H,6H)-dione 95%

1096594-11-4
(3R,4S)-4-Amino-tetrahydropyran-3-ol hydrochloride 97%

105499-34-1
(2R)-Oxane-2-carboxylic acid 97%

Oxetane

1159736-25-0
3-(Boc-amino)-3-oxetanecarboxylic acid 98%

1341989-73-8
N-Ethyloxetan-3-amine 97%

28562-61-0
3-Ethyloxetane-3-carboxylic acid 96%

28562-68-7
3-methyloxetane-3-carboxylic acid 97%

170128-14-0
3-Methyl-3-oxetanecarbonitrile 95%

1393585-20-0
3-(4-Bromophenyl)oxetane-3-carboxylic acid 97%

1021392-84-6
3-Aminomethyl-3-[bis(phenylmethyl)amino]oxetane >95%

1363382-11-9
3-(Boc-amino)oxetane-3-methanol >95%

Piperazine

1334336-12-7
tert-Butyl 2-(methoxymethyl)piperazine-1-carboxylate 97%

129306-17-8
4,7-Diazaspiro[2.5]octane-5,8-dione ≥95%

938043-30-2
4-(4-Methyl-1-piperazinylmethyl)benzeneboronic acid pinacol ester 95%

314741-40-7
(S)-1-Boc-3-(Hydroxymethyl)piperazine 98%

438049-35-5
N-Boc-3-Ethylpiperazine 95%

147081-29-6
(S)-4-Boc-2-methylpiperazine 97%

163765-44-4
(R)-1-Boc-3-methylpiperazine ≥99.0% (GC)

1254115-22-4
Benzyl 4-(oxetan-3-yl)piperazine-1-carboxylate 97%

Cyclopentane

58101-60-3
Methyl 3-cyclopentenecarboxylate 95+%

321744-14-3
Methyl (1S,3R,4S)-3-{[(tert-butoxy)carbonyl]amino}-4-hydroxycyclopentane-1-carboxylate 97%

207729-03-1
cis-3-N-Boc-aminocyclopentanol 98%

1203306-05-1
3-Aminocyclopentanecarboxylic acid hydrochloride ≥95%

274693-53-7
Benzyl [(3aS,4R,6S,6aR)-6-hydroxy-2,2-dimethyltetra-hydro-3aH-cyclopenta[d][1,3]dioxol-4-yl]carbamate 97.00%

180196-56-9
(1R,3S)-Methyl 3-aminocyclopentanecarboxylate hydrochloride 95%

205675-68-9
benzyl ((1R,4S)-4-hydroxycyclopent-2-en-1-yl)carbamate 95%

124555-33-5
trans-3-Aminocyclopentanol hydrochloride 95%

Azetidine

887591-62-0
1-Boc-3-methylazetidine-3-carboxylic acid 97%

159749-28-7
1-(tert-Butoxycarbonyl)azetidine-2-carboxylic acid 95%

497160-14-2
3-Azetidineacetic acid, 1-[(1,1-dimethylethoxy)carbonyl]-, methyl ester >95%

1363382-00-6
Methyl 1-Boc-3-fluoroazetidine-3-carboxylate >95%

757239-60-4
Methyl 1-Cbz-azetidine-3-carboxylate 97%

934664-41-2
tert-Butyl 3-Methyleneazetidine-1-carboxylate >95%

36476-78-5
3-Azetidinecarboxylic acid 98%

36476-87-6
1-Benzhydrylazetidine-3-carboxylic acid >95%

Pyridine

53617-36-0
1-Methyl-4-piperidin-4-yl-piperazine 95%

82671-06-5
2,6-Dichloro-5-fluoropyridine-3-carboxylic acid 97%

97483-77-7
5-Bromo-2-pyridinecarbonitrile 97%

58584-92-2
2-Amino-6-chloronicotinic acid 95%

73027-79-9
4,6-Dichloronicotinic acid 97%

76093-33-9
(R)-(-)-1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid monomethyl ester 95%

4021-11-8
2-Methylpyridine-4-carboxylic acid 97%

1227581-36-3
(2-Methoxy-5-(trifluoromethyl)pyridin-3-yl)methanol ≥95%

1227576-08-0
3-(bromomethyl)-2-methoxy-5-(trifluoromethyl)pyridine 97%

Quinazoline

1036755-96-0
Methyl 2-chloroquinazoline-6-carboxylate >95%

1260847-61-7
7-Bromo-4,6-dichloroquinazoline 95%

174313-65-6
6-bromo-2-(methylsulfanyl)-3,4-dihydroquinazolin-4-one 97%

903130-01-8
Methyl 4-chloroquinazoline-8-carboxylate 95%

953039-79-7
Methyl 2-chloroquinazoline-7-carboxylate >95%

945553-94-6
4-(3-chloro-4-fluoro-phenylamino)-7-phenylsulphonyl-6-nitro-quinazoline 97%

574745-97-4
4-Chloro-6-hydroxy-7-methoxyquinazoline >95%

953039-14-0
6-Bromo-2-chloro-8-methoxy-quinazoline 97%