Some fragments that change the active structure of drug molecules, like mechanical parts, can be installed on the drug molecule skeleton to improve the drug activity and reduce side effects.
(S)-2-(tert-butoxycarbonyl)pent-4-enoic acid...
CAS RN
221352-64-3
Appearance
White to off white solid
Purity
>97%
CAS RN
598-42-5
Appearance
White to off-white or pale yellow powder
Purity
4-(TRIFLUOROMETHYL)BENZOIC ANHYDRIDE
CAS RN
25753-16-6
Appearance
Off-white to white crystalline powder
Purity
≥98.0% GC
4-Hydroxy-6-(trifluoromethyl)pyrimidine
CAS RN
1546-78-7
Appearance
White solid
Purity
>98% HPLC
N-(2-Aminoethyl)maleimid trifluoroacetate salt
CAS RN
146474-00-2
Appearance
Off white solid
Purity
95% HPLC
N-Benzyl-N-(methoxymethyl)trimethylsilylmethylamine
CAS RN
93102-05-7
Appearance
Colorless to yellow liquid
Purity
≥80.0%
N-Cbz-piperidine-2-carboxylic acid
CAS RN
84358-13-4
Appearance
White crystalline powder
Purity
98% HPLC
N-Cbz-piperidine-2-carboxylic acid
CAS RN
84358-13-4
Appearance
White crystalline powder
Purity
98% HPLC
2-Chloro-1-methylpyridinium p-toluenosulfonate
CAS RN
7403-46-5
Appearance
White to almost white crystals
Purity
98% HPLC
5,7-Dichloropyrazolo[1,5-a]pyrimidine
CAS RN
57489-77-7
Appearance
Pale yellow to white solid powder
Purity
98% HPLC
Di-tert-butyl N,N-diethylphosphoramidite
CAS RN
117924-33-1
Appearance
Yellow liquid
Purity
98% GC
METHYL 1-BENZYL-4-OXOPYRROLIDINE-3-CARBOXYLATE
CAS RN
329956-53-8
Appearance
Pale yellow viscous liquid
Purity
>95% HNMR
Methyl 1-methylpiperidine-4-carboxylate
CAS RN
1690-75-1
Appearance
Light yellow liquid
Purity
98% GC
CAS RN
101385-93-7
Appearance
White to off white powder
Purity
99% GC
O-(2,4-dinitrophenyl)hydroxylamine
CAS RN
33543-55-4
Appearance
White to off white solid
Purity
99% HPLC
4-hydroxymethyl-3-methoxyphenylacetic acid
CAS RN
83590-77-6
Appearance
Off white to white powder
Purity
98% HPLC
Methyl 1-Boc-piperidine-4-carboxylate
CAS RN
124443-68-1
Appearance
Light yellow liquid
Purity
98% GC
1-Ethyl-3-methylimidazolium P-toluenesulfonate
CAS RN
328090-25-1
Appearance
Off white to white powder
Purity
98%AT
CAS RN
584-13-4
Appearance
White crystalline powder
Purity
98%HPLC
6-Hydroxy-2,3-dihydrobenzo[b]furan-3-one
CAS RN
6272-26-0
Appearance
Grey powder
Purity
98%HPLC
CAS RN
6627-89-0
Appearance
Colorless transparent liquid; 1.05 g/mL at 20 °C(lit.)
Purity
95%HPLC
2,2-DIFLUORO-N-METHOXY-N-METHYLACETAMIDE
CAS RN
142492-01-1
Appearance
Colorless to light yellow transparent liquid
Purity
≥98% GC
2-Aminoethanesulphonamide monohydrochloride
CAS RN
89756-60-5
Appearance
White crystalline powder
Purity
97%-102%(T)
2-methoxyethyl 4-methylbenzenesulfonate
CAS RN
17178-10-8
Appearance
Colorless to yellowish liquid
Purity
>98%
6-Bromopyridine-2-carbaldehyde
CAS RN
34160-40-2
Appearance
Pale yellow powder
Purity
98%HPLC
CAS RN
1034-39-5
Appearance
Off white crystal or light yellow powder
Purity
97% T
N-(tert-Butoxycarbonyl)-1,4-phenylenediamine
CAS RN
71026-66-9
Appearance
Beige to brown crystalline powder
Purity
97% HPLC
CAS RN
71195-85-2
Appearance
Colorless to yellowish liquid
Purity
98%GC
2-Bromo-1,3,5-triisopropylbenzene
CAS RN
21524-34-5
Appearance
Colorless to yellowish liquid
Purity
97% GC
4-Aminobenzamidine dihydrochloride
CAS RN
2498-50-2
Appearance
White powder
Purity
98%HPLC
CAS RN
16064-24-7
Appearance
Off white to white solid powder
Purity
>98% HPLC
CAS RN
144564-95-4
Appearance
White to off white powder
Purity
98% HPLC
Chloroformamidine hydrochloride
CAS RN
29671-92-9
Appearance
White crystalline powder
Purity
98%AT
N-(Diphenylmethylene)glycerine tert-butyl ester
CAS RN
81477-94-3
Appearance
White to almost white crystalline powder
Purity
98% HPLC
4-Bromophenylhydrazine hydrochloride
CAS RN
622-88-8
Appearance
White to off white solid
Purity
98%HPLC
Diethyl (Phthalimidomethyl)phosphonate
CAS RN
33512-26-4
Appearance
White to off white solid
Purity
≥98% GC
CAS RN
6065-82-3
Appearance
Pale yellow to colorless liquid
Purity
>98% GC,HNMR
Myristic acid N-hydroxysuccinimide ester
CAS RN
69888-86-4
Appearance
Off white to white crystals
Purity
99% HPLC
TMAD N,N,N',N'-tetramethylazodicarboxamide
CAS RN
10465-78-8
Appearance
Yellow solid
Purity
98%HPLC
2-acetamido-3-(4-bromophenyl)propanoic acid
CAS RN
273730-59-9
Appearance
White solid
Purity
99% HPLC
CAS RN
38353-06-9
Appearance
Pale yellow to yellow solid
Purity
98% HPLC
CAS RN
89-91-8
Appearance
Colorless Transparent Liquid
Purity
98% GC
t-Boc-aminooxyacetic Acid N-Hydroxysuccinimide Ester
CAS RN
80366-85-4
Appearance
White crystal
Purity
98% HPLC
1,4-Benzodioxane-2-carboxylic acid
CAS RN
3663-80-7
Appearance
White to off-white powder
Purity
≥98% GC
CAS RN
1527-89-5
Appearance
White crystal or colorless liquid
Purity
≥98%
CAS RN
5570-77-4
Appearance
Pale yellow liquid
Purity
98% GC
4-Fluorobenzamidine hydrochloride
CAS RN
456-14-4
Appearance
White to almost white crystalline powder
Purity
98%HPLC
CAS RN
106615-61-6
Appearance
Off white to white solid powder
Purity
>98% HPLC
CAS RN
16499-56-2
Appearance
Off white to white solid powder
Purity
>98% HPLC
CAS RN
31374-18-2
Appearance
Off white to white solid powder
Purity
>98% HPLC
Ethyl-2-(bis(2-oxooxazolidin-3-yl)phosphoryloxyimino)-2-cyan...
CAS RN
117683-30-4
Appearance
White solid
Purity
Conform to the nuclear magnetic spectrum
CAS RN
43036-06-2
Appearance
Yellow to dark brown liquid
Purity
98%GC
CAS RN
5117-19-1
Appearance
Pale yellow liquid or white solid
Purity
98% HPLC
2-Chloro-1-(4-methoxyphenyl)ethanone
CAS RN
2196-99-8
Appearance
Quasi white crystalline powder
Purity
99%HPLC
Ethyl 6-bromo-4-hydroxy-3-quinolinecarboxylate
CAS RN
79607-23-1
Appearance
Off white to white solid
Purity
98.0% HPLC
CAS RN
2439-85-2
Appearance
Pale yellow crystalline powder
Purity
96% T
CAS RN
27988-97-2
Appearance
colorless liquid
Purity
0.45ML
1-(Tetrahydro-2H-pyran-2-yl)-1H-pyrazole
CAS RN
449758-17-2
Appearance
Colorless Transparent Liquid
Purity
>95% GC
Diisopropyl 3,3-dimethoxycyclobutane-1,1-dicarboxylate
CAS RN
115118-68-8
Appearance
Purity
≥98%
Ethyl 1-benzyl-4-pyrrolidone-3-carboxylate
CAS RN
1027-35-6
Appearance
Pale yellow to yellow liquid
Purity
97% HPLC
FCPCL 1-(2-Furanylcarbonyl)piperazine hydrochloride
CAS RN
60548-09-6
Appearance
White to off white solid
Purity
98%HPLC
CAS RN
5329-33-9
Appearance
Off-white to white powder
Purity
≥98.0%
CAS RN
69491-64-1
Appearance
White to off-white powder
Purity
≥98.0%
CAS RN
87-42-3
Appearance
Off white to white solid powder
Purity
>98% HPLC
CAS RN
26218-78-0
Appearance
White to off white solid
Purity
97%HPLC
CAS RN
20691-89-8
Appearance
Transparent to yellowish liquid
Purity
97% GC
O-Pivaloylhydroxylammonium Trifluoromethanesulfonate
CAS RN
1293990-73-4
Appearance
Pale yellow to off white solid
Purity
≥98% T
1-(Diphenylmethyl)-3-azetidinyl methanesulfonate
CAS RN
33301-41-6
Appearance
White solid
Purity
>98% HPLC
2-(3-bromopropyl)isoindoline-1,3-dione
CAS RN
5460-29-7
Appearance
White powder
Purity
≥98.5%(HPLC)
2-Phthalimidoethane sulfonamide
CAS RN
4443-23-6
Appearance
Off white to white powder
Purity
97% HPLC
5-(4-Bromophenyl)-6-hydroxypyrimidin-4(1H)-one
CAS RN
706811-25-8
Appearance
Off white to white solid powder
Purity
>98% HPLC
CAS RN
3473-63-0
Appearance
White to almost white crystal
Purity
≥99.0% T
Methyl 2,5-dioxo-2H-pyrrole-1(5H)-carboxylate
CAS RN
55750-48-6
Appearance
Off white to white crystalline powder
Purity
≥98%HPLC
CAS RN
5394-18-3
Appearance
White to yellowish brown solid
Purity
≥98% HPLC
CAS RN
18303-04-3
Appearance
White to off white powder
Purity
98%HPLC
CAS RN
5806-90-6
Appearance
Pale yellow to colorless liquid
Purity
>95%(GC, HNMR)
(Trimethylsilyl)methanamine hydrochloride
CAS RN
18166-01-3
Appearance
White to off-white crystalline powder
Purity
98.0~102.0% (T)
1-(Tert-butoxycarbonyl)-2-pyrrolidinone
CAS RN
85909-08-6
Appearance
Yellowish to colorless solid crystal
Purity
≥98%
1-Boc-2-piperidinecarbaldehyde
CAS RN
157634-02-1
Appearance
Light yellow viscous liquid or solid
Purity
95% HPLC
CAS RN
17616-03-4
Appearance
Pale yellow to colorless transparent liquid
Purity
98.0% GC
2-(T-butyldimethylsiloxy)ethanol
CAS RN
102229-10-7
Appearance
Colorless to yellowish liquid
Purity
97%GC
3-(tert-Butoxycarbonylamino)propyl bromide
CAS RN
83948-53-2
Appearance
White to off-white powder
Purity
≥98.0% GC
4-chloro-5-iodo-7-methyl-7H-pyrrolo[2,3-d]pyrimidine
CAS RN
833481-37-1
Appearance
Off white powder solid
Purity
98.2% HPLC
Benzyl 1-methylhydrazinecarboxylate
CAS RN
37519-04-3
Appearance
Colorless to pale yellow transparent liquid
Purity
≥97.0%
HTIB [Hydroxy(tosyloxy)iodo]benzene
CAS RN
27126-76-7
Appearance
Off white to yellowish crystalline powder
Purity
99%HPLC
1-Ethyl-3-methylimidazolium ethylsulfate
CAS RN
342573-75-5
Appearance
White to off white solid
Purity
98% HPLC
2-bromobenzimidamide hydrochloride
CAS RN
57075-82-8
Appearance
Off white to white solid powder
Purity
>97% HPLC
4,6-Dihydro-1H-pyrrolo[3,4-c]pyrazole-5-carboxylic acid...
CAS RN
657428-42-7
Appearance
Pale yellow to orange powder
Purity
98% HPLC
BEAZ Bis(2,2,2-trichloroethyl) azodicarboxylate
CAS RN
38857-88-4
Appearance
Yellow crystalline powder
Purity
≥98%HPLC
METHYLBENZIMIDATE HYDROCHLORIDE
CAS RN
5873-90-5
Appearance
White solid
Purity
Titration content 101.5%
CAS RN
52898-32-5
Appearance
White to off white solid
Purity
≥98% HPLC
Triethyl 1,1,2-ethanetricarboxylate
CAS RN
7459-46-3
Appearance
Off white to white solid powder
Purity
>98% HPLC
(3aR,4S,7R,7aS) 4,7-Methano-1H-isoindole-1,3(2H)-dione
CAS RN
14805-29-9
Appearance
Purity
≥98%
1-(4-nitrophenyl)sulfonylpiperidin-4-one
CAS RN
924869-20-5
Appearance
Pale yellow solid
Purity
>98%(HPLC)
1-(cyclopropylcarbonyl)-Monohydrochloride
CAS RN
1021298-67-8
Appearance
Off white to white powder
Purity
98% T
1-Boc-4-[methoxy(methyl)carbamoyl]piperidine
CAS RN
139290-70-3
Appearance
White solid
Purity
98.7% HPLC
2,2-DIETHOXYETHYLPHOSPHONIC ACID DIETHYL ESTER
CAS RN
7598-61-0
Appearance
Pale yellow to colorless transparent liquid
Purity
98.0%(GC)
2-Bromo-5-fluoropyridine 1-oxide
CAS RN
935534-39-7
Appearance
Light yellow to almost white solid
Purity
≥98.0%
CAS RN
2645-22-9
Appearance
Off white to yellow solid
Purity
98%HPLC
CLMMB 4-Chloro-n-methoxy-n-methylbenzamide
CAS RN
122334-37-6
Appearance
Colorless Transparent Liquid
Purity
≥98%GC
CAS RN
85908-96-9
Appearance
Colorless to yellowish liquid or white crystal
Purity
>98% HPLC
1-BUTYL-3-METHYLIMIDAZOLIUM DICYANAMIDE
CAS RN
448245-52-1
Appearance
Off white to yellowish liquid
Purity
97% NMR
3-(2-pyridyldithio)propionic acid n-hydroxy-succinimide...
CAS RN
68181-179
Appearance
Off white to white solid powder
Purity
98% HPLC
CAS RN
32779-36-5
Appearance
White crystalline powder
Purity
98%HPLC
CAS RN
32084-59-6
Appearance
Off white to white solid powder
Purity
>98% HPLC
CAS RN
18704-37-5
Appearance
Off white or white crystals
Purity
98%HPLC
Dimethyl 1,3-dihydro-3-oxoisobenzofuran-1-yl-1-phosphonate
CAS RN
61260-15-9
Appearance
White crystal or powder
Purity
98%HPLC
DiMorpholinophosphinyl Chloride
CAS RN
7264-90-6
Appearance
Pale yellow to colorless transparent liquid
Purity
>97% T
Diphenylmethyleniminoacetonitrile
CAS RN
70591-20-7
Appearance
White to yellow crystalline powder
Purity
98%HPLC
DL-methyl-2-amino-2-cyclopropylacetate hydrochloride
CAS RN
535936-86-8
Appearance
White powder
Purity
Ethyl 1,3-dimethylpyrazole-5-carboxylate
CAS RN
5744-40-1
Appearance
Pale yellow transparent liquid
Purity
98%GC
CAS RN
170384-29-9
Appearance
Off-white to white crystalline powder
Purity
≥98.0% GC
CAS RN
1460-02-2
Appearance
White crystalline powder
Purity
98% GC
CAS RN
775-16-6
Appearance
Colorless to yellowish transparent liquid
Purity
98%GC
1-Boc-4-(2-chloroethyl)piperazine
CAS RN
208167-83-3
Appearance
White crystalline solid
Purity
>98% GC, HNMR
1-cyclohexyl-1H-pyrrole-2,5-dione
CAS RN
1631-25-0
Appearance
White to off white solid
Purity
>98%
CAS RN
17766-28-8
Appearance
Pale yellow to colorless solid
Purity
98% GC
1-[4-(2-AZEPAN-1-YL-ETHOXY)-BENZYL]-5-BENZYLOXY-2-(4-BENZYLO...
CAS RN
198480-21-6
Appearance
Purity
≥98%
1H-Benzotriazole-5-carboxylic acid
CAS RN
60932-58-3
Appearance
Pale pink to pinkish-red powder
Purity
≥98.0%
4-(Dimethyl-tert-Butylsilyloxy)butan-1-ol
CAS RN
87184-99-4
Appearance
Colorless to yellowish liquid
Purity
≥98%GC
6,7-Dimethoxy-3,4-dihydroquinazoline-4-one
CAS RN
13794-72-4
Appearance
Off white to white solid powder
Purity
>98% HPLC
Diphenylmethylene-Glycine benzyl ester
CAS RN
81477-91-0
Appearance
White powder
Purity
99% HPLC
ethyl 6-bromo-1,4-dihydro-4-oxoquinoline-3-carboxylate
CAS RN
122794-99-4
Appearance
White to off white solid powder
Purity
>98.0% H-NMR
Methyl (triphenylphosphoranylidene)acetate
CAS RN
2605-67-6
Appearance
White powder
Purity
99.2% HPLC
CAS RN
98968-72-0
Appearance
White to yellowish powder
Purity
98% GC
N-boc-ethylenediamine hydrochloride
CAS RN
79513-35-2
Appearance
White powder
Purity
98 %-103%(AT)
CAS RN
27687-14-5
Appearance
White or light yellow crystalline powder
Purity
98% GC
CAS RN
36476-84-3
Appearance
White solid
Purity
>98% HPLC
2-Methoxyphenylhydrazine hydrochloride
CAS RN
57396-67-5
Appearance
Off white to pink powder
Purity
≥98.0% HPLC
Morpholine-4-carboxiMidaMide hydrochloride
CAS RN
5638-78-8
Appearance
White powder
Purity
>98% HNMR
CAS RN
72648-80-7
Appearance
Light yellow to colorless transparent liquid or light yellow to white solid
Purity
98% GC
CAS RN
7689-50-1
Appearance
White crystalline powder
Purity
98%HPLC
Tert-butyl n,n-bis(2-hydroxyethyl)carbamate
CAS RN
103898-11-9
Appearance
Pale yellow transparent liquid
Purity
97% HNMR
CAS RN
31938-11-1
Appearance
White powder
Purity
≥99%(HPLC)
(2-Chloro-ethyl)-methyl-carbamic acid tert-butyl ester
CAS RN
220074-38-4
Appearance
Colorless to nearly colorless transparent liquid
Purity
≥98.0%
(R)-N-Cbz-piperidine-3-carboxylic acid
CAS RN
78190-11-1
Appearance
White to almost white crystalline powder
Purity
98% HPLC
1,3-Bis(tert-butoxycarbonyl)guanidine
CAS RN
154476-57-0
Appearance
Off-white to light yellow solid powder
Purity
98% HPLC
2-Azido-1,3-dimethylimidazolinium Hexafluorophosphate
CAS RN
1266134-54-6
Appearance
White crystalline powder
Purity
98% HPLC
N,N'-Bis(tert-butoxycarbonyl)guanidine
CAS RN
154476-57-0
Appearance
White powder
Purity
98% HPLC
CAS RN
16066-84-5
Appearance
Transparent liquid or white crystal
Purity
>98.0%(GC)
3-Trifluoromethylbenzamidine hydrochloride
CAS RN
62980-03-4
Appearance
White powder
Purity
98%HPLC
CAS RN
15115-60-3
Appearance
White to off white solid
Purity
≥ 98%HPLC
4-Chloro-3-pyridinesulfonamide
CAS RN
33263-43-3
Appearance
Light yellow or yellow solid
Purity
>97.0% HPLC
CAS RN
477844-84-1
Appearance
White powder
Purity
>98.0% HPLC
CAS RN
3240-34-4
Appearance
Off white to white powder
Purity
99% HPLC
N-(3-Aminopropyl)methacrylamide hydrochloride
CAS RN
72607-53-5
Appearance
White powder
Purity
98% HPLC
N-Cbz-piperidine-4-carboxylic acid
CAS RN
10314-98-4
Appearance
White or almost white crystalline powder
Purity
98% GC
Tert-butyl 1H-1,2,4-triazole-1-carboxylate
CAS RN
41864-24-8
Appearance
White powder
Purity
97% HNMR
CAS RN
109-85-3
Appearance
Pale yellow to colorless transparent liquid
Purity
98.0%(GC)
CAS RN
1971-49-9
Appearance
White to off white solid
Purity
≥98% HPLC
N-BENZYL-L-PROLINE ETHYL ESTER
CAS RN
955-40-8
Appearance
Colorless Transparent Liquid
Purity
99.7% GC
Tetraethylene Glycol Monobenzyl Ether
CAS RN
86259-87-2
Appearance
Pale yellow clear liquid
Purity
95% GC
1-(2-Tetrahydrofuroyl)piperazine hydrobromide
CAS RN
63590-62-5
Appearance
Off white powder
Purity
>97%(H-NMR)
7-BENZYL-5,6,7,8-TETRAHYDRO-3H-PYRIDO[3,4-D]PYRIMIDIN-4-ONE...
CAS RN
62458-96-2
Appearance
White solid powder
Purity
>98% HPLC
Ethyl 1-Benzylpyrrolidine-3-carboxylate
CAS RN
5747-92-2
Appearance
Pale yellow to colorless transparent liquid
Purity
97% GC
CAS RN
5006-62-2
Appearance
Colorless to yellowish liquid
Purity
98% GC
CAS RN
593-56-6
Appearance
White or yellowish crystals
Purity
98%-103(AT)
CAS RN
40101-31-3
Appearance
White solid
Purity
≥98% HPLC
N-Isopropylhydroxylamine hydrochloride
CAS RN
50632-53-6
Appearance
White crystalline powder
Purity
97%AT
CAS RN
101930-07-8
Appearance
Transparent to yellowish liquid
Purity
97% HPLC
1,1'-(Azodicarbonyl)-dipiperidine
CAS RN
10465-81-3
Appearance
Pale yellow to yellow solid
Purity
98% HPLC
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