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
1H-1,2,4-triazole-1-carboxamidine monohydrochloride
CAS RN
19503-26-5
Appearance
White powder
Purity
98% HPLC
2-amino-N-benzylacetamide hydrochloride
CAS RN
20432-97-7
Appearance
White crystalline powder
Purity
98-103% T
methyl 2-((tert-butoxycarbonyl)oxy)acetate
CAS RN
878395-91-6
Appearance
colorless liquid
Purity
99% GC
Methyl piperidine-2-carboxylate
CAS RN
41994-45-0
Appearance
Colorless to yellowish liquid
Purity
98% GC
CAS RN
130312-02-6
Appearance
Colorless transparent liquid or white solid
Purity
97% GC
CAS RN
3589-41-1
Appearance
White to off-white crystalline powder
Purity
≥98.0%
CAS RN
50595-15-8
Appearance
Colorless Transparent Liquid
Purity
97%GC
(Trifluoroacetyl)benzotriazole (1H,2H-isomer mixture)
CAS RN
183266-61-7
Appearance
Off white solid
Purity
99,90%
2-acetamido-3-(3-bromophenyl)propanoic acid
CAS RN
1266723-48-1
Appearance
White solid
Purity
99% HPLC
CAS RN
931-19-1
Appearance
White to brown solid or colorless to brown liquid
Purity
≥97% HPLC
Benzylhydroxylamine hydrochloride
CAS RN
2687-43-6
Appearance
Off white to white solid
Purity
98%HPLC
CAS RN
2449-05-0
Appearance
Orange crystalline powder
Purity
98% HPLC
Ethyl 1-benzylpiperidine-4-carboxylate
CAS RN
24228-40-8
Appearance
Colorless to light yellow liquid
Purity
98% HPLC
palmitic acid N-succinimide ester
CAS RN
14464-31-4
Appearance
White solid
Purity
Conform to the nuclear magnetic spectrum
Tetraisopropylazodicarboxamide
CAS RN
155877-06-8
Appearance
Yellow solid
Purity
99%HPLC
Ethyl 3-bromobenzenecarboximidoate hydrochloride
CAS RN
57508-63-1
Appearance
White solid
Purity
1,1,1,3,3,3-Hexafluoro-2-propanol
CAS RN
920-66-1
Appearance
Colorless Transparent Liquid
Purity
98% GC
CAS RN
775-15-5
Appearance
Pale yellow to colorless transparent liquid
Purity
>98%(GC)
2-Thiazolecarboxamidine Hydrochloride
CAS RN
247037-82-7
Appearance
Off white to white solid powder
Purity
>99% HPLC
2-[2-(2-Aminoethoxy)ethoxy]ethanol
CAS RN
6338-55-2
Appearance
Colorless to pale yellow transparent liquid
Purity
≥98.0% GC
3,8,11-Trioxa-5-azatridecan-13-oic acid
CAS RN
108466-89-3
Appearance
Off white to white solid powder
Purity
98% HPLC
Ethyl (hydroxyimino)cyanoacetate potassium salt
CAS RN
158014-03-0
Appearance
Yellow powdery solid
Purity
98.6% HPLC
MPCN 4-Methoxy-2-oxo-1,2-dihydro-pyridine-3-carbonitrile
CAS RN
21642-98-8
Appearance
Pale yellow crystalline powder
Purity
≥99%HPLC
CAS RN
1631-26-1
Appearance
Off white to white crystalline powder
Purity
98%HPLC
CAS RN
7154-73-6
Appearance
Transparent colorless liquid
Purity
>97% T
CAS RN
54247-27-7
Appearance
Colorless to light yellow transparent liquid
Purity
≥98% GC
Tert-Butyl (2-hydroxyethyl)(methyl)carbamate
CAS RN
57561-39-4
Appearance
colorless liquid
Purity
99% GC
1-Boc-piperidine-3-carboxamide
CAS RN
91419-49-7
Appearance
White or light yellow powder
Purity
97% HPLC
1-Propanaminium-3-[(ethylcarbonimidoyl)amio]-N,N,N-trimethyl...
CAS RN
6179-57-3
Appearance
White to off-white powder
Purity
≥98.0%
N,N'-Di-tert-butoxycarbonyl-L-histidine
CAS RN
20866-46-0
Appearance
White solid
Purity
N-tert-butoxycarbonyl-(methylamino)acetaldehyde
CAS RN
123387-72-4
Appearance
Pale yellow to colorless transparent liquid
Purity
98% GC
CAS RN
40114-49-6
Appearance
Pale yellow transparent liquid
Purity
99% GC
2,4,6-Tri-tert-butylnitrobenzene
CAS RN
4074-25-3
Appearance
White to off white solid
Purity
≥ 95%GC
CAS RN
1068-21-9
Appearance
Pale yellow to colorless transparent liquid or solid
Purity
97% GC
Glycine methyl ester hydrochloride
CAS RN
5680-79-5
Appearance
White crystalline powder
Purity
98% AT
Methyl 1-Boc-piperidine-2-carboxylate
CAS RN
167423-93-0
Appearance
Light yellow liquid
Purity
98% GC
MSAT O-(2-Mesitylenesulfonyl)acethydroxamic acid ethyl ester
CAS RN
38202-27-6
Appearance
Off white to white powder
Purity
98%HPLC
Sulfo-N-succinimidyl 4-maleimidobutyrate sodium salt
CAS RN
185332-92-7
Appearance
White to off-white powder
Purity
>95% H-NMR
(R)-(-)-2,2-Dimethyl-1,3-dioxolane-4-methanol
CAS RN
14347-78-5
Appearance
Colorless to yellowish transparent liquid
Purity
98% GC
(S)-(+)-2,2-Dimethyl-1,3-dioxolane-4-methanol
CAS RN
22323-82-6
Appearance
Colorless Transparent Liquid
Purity
98% GC
CAS RN
929-59-9
Appearance
Pale yellow clear liquid
Purity
>97% T
CAS RN
21075-83-2
Appearance
Colorless to yellowish liquid
Purity
98%GC
1-Boc-piperidine-4-carboxaldehyde
CAS RN
137076-22-3
Appearance
Off white powder
Purity
95% GC
1-pyridin-2-ylmethylpiperazine hydrochloride
CAS RN
1185319-46-3
Appearance
Pale yellow solid powder
Purity
99,70%
2-Bromobenzamidine hydrochloride
CAS RN
57075-82-8
Appearance
White powder
Purity
≥98%HPLC
CAS RN
57260-73-8
Appearance
Colorless Transparent Liquid
Purity
98%GC
N-Boc-imino-(triphenyl)phosphorane
CAS RN
68014-21-1
Appearance
White crystal
Purity
98% HPLC
N-Methoxy-n-methyltrifluoroacetamide
CAS RN
104863-67-4
Appearance
Colorless Transparent Liquid
Purity
≥98%GC
1-tert-Butyl-3-ethylcarbodiiMide
CAS RN
1433-27-8
Appearance
Light yellow to colorless transparent liquid
Purity
≥98.0%
2,5-dichloro-N-(2-(isopropylsulfonyl)phenyl)pyrimidin-4-amin...
CAS RN
761440-16-8
Appearance
Off white to white solid powder
Purity
98% HPLC
2-(3-CHLOROPROPYL)-2,5,5-TRIMETHYL-[1,3]-DIOXANE
CAS RN
88128-57-8
Appearance
Purity
≥98%
2-Ethoxybenzamidine hydrochloride
CAS RN
18637-00-8
Appearance
White to off white powder
Purity
98% HPLC
2-[2-(2-AZIDOETHOXY)ETHOXY]ETHANOL
CAS RN
86520-52-7
Appearance
Colorless to light yellow transparent liquid
Purity
≥98% GC
5,6,7,8-Tetrahydroquinazolin-4-ol
CAS RN
19178-19-9
Appearance
Off white to white solid powder
Purity
>98% HPLC
EOPC Ethyl N-Boc-4-Oxopyrrolidine-3-carboxylate
CAS RN
146256-98-6
Appearance
Off white solid
Purity
98% HPLC
methyl 4-piperidinecarboxylate
CAS RN
2971-79-1
Appearance
Pale yellow liquid
Purity
98% GC
CAS RN
22509-74-6
Appearance
Off white to white crystalline powder
Purity
97% HPLC
Ethyl 1-Boc-3-pyrrolidinecarboxylate
CAS RN
170844-49-2
Appearance
Colorless to yellowish liquid
Purity
>97%
P-nitrophenylhydrazine hydrochloride
CAS RN
636-99-7
Appearance
Light brown powdery solid
Purity
>98%(HPLC, HNMR)
1-(1-ethoxyethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-...
CAS RN
1029716-44-6
Appearance
White solid
Purity
99.8% HPLC
CAS RN
2916-68-9
Appearance
Colorless to yellowish liquid
Purity
97% GC
Phenolphthalein monophosphate dicyclohexylammonium salt
CAS RN
14815-59-9
Appearance
Purity
≥95%
Phosphorochloridic acid diisopropyl ester
CAS RN
2574-25-6
Appearance
Colorless Transparent Liquid
Purity
97%GC
Benzyl N-(hydrazinylmethylidene)carbamate
CAS RN
16706-54-0
Appearance
White crystalline powder
Purity
>98%HPLC
N-Amidino-N'-(p-isopropyl-benzyliden)-hydrazin
CAS RN
35404-63-8
Appearance
White solid
Purity
98% H-NMR
4-Aminopyrazolo[3,4-d]pyrimidine
CAS RN
2380-63-4
Appearance
Light yellow to yellow or light brown powder
Purity
≥98% HPLC
Ethyl N-Boc-piperidine-4-carboxylate
CAS RN
142851-03-4
Appearance
Light yellow liquid
Purity
97% GC
CAS RN
14273-92-8
Appearance
Colorless Transparent Liquid
Purity
97.4% GC
Nalpha-Fmoc-L-lysine hydrochloride
CAS RN
139262-23-0
Appearance
Off white to white solid
Purity
98% HPLC
1-(cyanoMethyl)pyrrolidinium trifluoroMethanesulfonate
CAS RN
573987-48-1
Appearance
White to off-white powder
Purity
≥98%
CAS RN
621-63-6
Appearance
Pale yellow to colorless liquid
Purity
98.0% GC,HNMR
2-(carbamoylmethylamino)ethanesulfonic acid
CAS RN
7365-82-4
Appearance
White to off white powder
Purity
>97.0%
2-methoxy-N,N-dimethylacetamide
CAS RN
4128-76-1
Appearance
Colorless to yellowish liquid
Purity
>97.0% GC
Boc-S S-Boc-2-mercapto-4,6-dimethylpyrimidine
CAS RN
41840-28-2
Appearance
White powder
Purity
99% HPLC
Triethyl methanetricarboxylate
CAS RN
6279-86-3
Appearance
colorless liquid
Purity
GC>98%
[(TERT-BUTOXY)CARBONYL]AMINO 2,2-DIMETHYLPROPANOATE
CAS RN
35657-40-0
Appearance
White solid
Purity
>98% HNMR
CAS RN
102029-44-7
Appearance
Off white solid
Purity
>98%
CAS RN
813-77-4
Appearance
Colorless Transparent Liquid
Purity
95% GC
2-(2-bromoethyl)isoindoline-1,3-dione
CAS RN
574-98-1
Appearance
White to off white solid
Purity
>98%
CAS RN
5415-94-1
Appearance
White solid powder
Purity
97% HNMR
CAS RN
75844-40-5
Appearance
Off white to white solid powder
Purity
>98% HPLC
CAS RN
5637-42-3
Appearance
Quasi white crystal
Purity
98%HPLC
Pyrrolidin-3-one hydrochloride
CAS RN
3760-52-9
Appearance
Off white powder
Purity
97% NMR
CAS RN
29897-82-3
Appearance
Colorless to yellowish liquid
Purity
>98%
4-Nitrobenzamidine, hydrochloride
CAS RN
15723-90-7
Appearance
Pale yellow crystalline powder
Purity
98%HPLC
CAS RN
30727-18-5
Appearance
Light yellow liquid
Purity
98% HPLC
Ethyl iminobenzoate hydrochloride
CAS RN
5333-86-8
Appearance
White crystalline powder
Purity
98%HPLC
Glycine ethyl ester hydrochloride
CAS RN
623-33-6
Appearance
White crystalline powder
Purity
98% AT
N-(Diphenylmethylene)glycine ethyl ester
CAS RN
69555-14-2
Appearance
Off white to white powder
Purity
98% HPLC
CAS RN
3680-71-5
Appearance
Off white to white solid powder
Purity
>98% HPLC
(9H-Fluoren-9-yl)methyl (2-(azidosulfonyl)ethyl)carbamate...
CAS RN
849949-18-4
Appearance
White to off-white solid
Purity
≥98% HPLC
1-Boc-piperidine-4-carboxamide
CAS RN
91419-48-6
Appearance
White or light yellow powder
Purity
97% HPLC
CAS RN
20872-93-9
Appearance
Off white to white solid powder
Purity
>98% HPLC
CAS RN
14997-58-1
Appearance
White powder
Purity
98.5% HPLC; 98.5% T
4,6-dichloro-5-nitropyrimidine
CAS RN
4316-93-2
Appearance
Off white to yellowish solid powder
Purity
98% HPLC
4-AMIDINOPYRIDINE HYDROCHLORIDEPYRIDINE-4-CARBOXIMIDAMIDE...
CAS RN
6345-27-3
Appearance
White crystalline powder
Purity
>97% T
SucciniMidyl 1-Pyrenebutanoate
CAS RN
114932-60-4
Appearance
Earthy yellow powder
Purity
98% HPLC
CAS RN
228244-04-0
Appearance
White to off white solid
Purity
98% HPLC
1-Benzylpyrrolidin-3-one,hydrochloride
CAS RN
1012-01-7
Appearance
Off white to off white powder
Purity
>98%(HPLC)
CAS RN
775-15-5
Appearance
Pale yellow to colorless transparent liquid
Purity
98.0%(HPLC)
CAS RN
22385-77-9
Appearance
White crystal
Purity
99% GC
1-(6-Aminohexyl)-1H-pyrrole-2,5-dione 2,2,2-trifluoroacetate
CAS RN
731862-92-3
Appearance
White solid
Purity
99,70%
2,4-Dimethoxy-4-hydroxyacetophenone
CAS RN
41351-30-8
Appearance
Pale yellow to white solid powder
Purity
98% HPLC
CAS RN
3209-71-0
Appearance
Pale yellow to off white solid
Purity
97% HPLC
5-Bromo-2-(4-boc-piperazin-1-yl)pyrimidine
CAS RN
374930-88-8
Appearance
White powder
Purity
98% HPLC
CAS RN
1034-39-5
Appearance
Off white crystal or light yellow powder
Purity
97% T
MMT-HexylaminolinkerPhosphoramidite
CAS RN
114616-27-2
Appearance
Colorless viscous liquid
Purity
≥98% HPLC
2-(2-chloro-5-nitrophenyl)pyridine
CAS RN
879088-40-1
Appearance
Pale yellow to yellow solid
Purity
≥98.0%
2-Aminoethanesulphonamide monohydrochloride
CAS RN
89756-60-5
Appearance
White crystalline powder
Purity
97%-102%(T)
2-Bromo-1,3,5-triisopropylbenzene
CAS RN
21524-34-5
Appearance
Colorless to yellowish liquid
Purity
97% GC
4-hydroxymethyl-3-methoxyphenylacetic acid
CAS RN
83590-77-6
Appearance
Off white to white powder
Purity
98% HPLC
CAS RN
16064-24-7
Appearance
Off white to white solid powder
Purity
>98% HPLC
CAS RN
1037794-22-1
Appearance
Off-white to pale yellow solid
Purity
>99.0%
4-(1-Acetylpiperazin-4-yl)phenol
CAS RN
67914-60-7
Appearance
Off white solid
Purity
>97% T
(S)-tert-butyl (1-cyano-2-(4-iodophenyl)ethyl)carbamate
CAS RN
1159489-37-8
Appearance
White to pale yellow powder
Purity
≥98.0%
3-Fluorobenzamidine hydrochloride
CAS RN
75207-72-6
Appearance
White powder
Purity
98% HPLC
Methyl 1-Boc-piperidine-4-carboxylate
CAS RN
124443-68-1
Appearance
Light yellow liquid
Purity
98% GC
CAS RN
1452-77-3
Appearance
White crystalline powder
Purity
>98% HPLC
3-Amino-4-pyrazolecarbonitrile
CAS RN
16617-46-2
Appearance
White to almost white or light yellow solid
Purity
≥98% HPLC
CAS RN
584-13-4
Appearance
White crystalline powder
Purity
98%HPLC
4-Bromophenylhydrazine hydrochloride
CAS RN
622-88-8
Appearance
White to off white solid
Purity
98%HPLC
CAS RN
56657-76-2
Appearance
Off white to white solid
Purity
>98%
CAS RN
185456-26-2
Appearance
White to off white solid
Purity
CAS RN
4792-15-8
Appearance
Pale yellow to colorless transparent liquid
Purity
≥98%
CAS RN
71195-85-2
Appearance
Colorless to yellowish liquid
Purity
98%GC
CAS RN
120-43-4
Appearance
Pale yellow to colorless liquid
Purity
99%GC
4-Aminobenzamidine dihydrochloride
CAS RN
2498-50-2
Appearance
White powder
Purity
98%HPLC
CAS RN
89797-68-2
Appearance
White crystalline powder
Purity
98%HPLC
Tert-butyl N-(2-acetamidoethyl)carbamate
CAS RN
207129-09-7
Appearance
Off white to white solid
Purity
99% GC
CAS RN
600-23-7
Appearance
colorless liquid
Purity
>95.0% H-NMR
1-(Cyanomethyl)piperidinium TetrafluoroborateTetramethyl...
CAS RN
434937-12-9
Appearance
Purity
3,5-dimethyl-pyrazole-1-carboxamidinnitrate
CAS RN
38184-47-3
Appearance
White solid powder
Purity
≥98.0%
CAS RN
40499-83-0
Appearance
Pale yellow transparent liquid or almost white solid
Purity
98% GC
CAS RN
31374-18-2
Appearance
Off white to white solid powder
Purity
>98% HPLC
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
18303-04-3
Appearance
White to off white powder
Purity
98%HPLC
TMAD N,N,N',N'-tetramethylazodicarboxamide
CAS RN
10465-78-8
Appearance
Yellow solid
Purity
98%HPLC
CAS RN
31037-42-0
Appearance
White to off-white solid
Purity
≥98.0%
1-Boc-2-piperidinecarbaldehyde
CAS RN
157634-02-1
Appearance
Light yellow viscous liquid or solid
Purity
95% HPLC
3,5-dimethylpyrazole-1-carboxamidine
CAS RN
22906-75-8
Appearance
Light pink to almost white powder
Purity
≥98% HPLC
Chloroformamidine hydrochloride
CAS RN
29671-92-9
Appearance
White crystalline powder
Purity
98%AT
DIAD Diisopropyl azodicarboxylate
CAS RN
2446-83-5
Appearance
Orange liquid or crystalline solid
Purity
>98%
2-methoxyethyl 4-methylbenzenesulfonate
CAS RN
17178-10-8
Appearance
Colorless to yellowish liquid
Purity
>98%
4-Fluorobenzamidine hydrochloride
CAS RN
456-14-4
Appearance
White to almost white crystalline powder
Purity
98%HPLC
4-Hydroxy Benzeneacetic Acid 2-(DiMethylaMino)-2-oxoethyl...
CAS RN
59721-16-3
Appearance
White solid
Purity
>98%(HPLC, HNMR)
CAS RN
38353-06-9
Appearance
Pale yellow to yellow solid
Purity
98% HPLC
CAS RN
16499-56-2
Appearance
Off white to white solid powder
Purity
>98% HPLC
Diethyl (Phthalimidomethyl)phosphonate
CAS RN
33512-26-4
Appearance
White to off white solid
Purity
≥98% GC
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