Focus Synthesis LLC
Text Search:
Enter catalog #, MFCD#, CAS, name, or partial name.
Substructure search:
CLICK FOR STRUCTURE SEARCH
Home » Products » FW<150 Building Blocks
FW<150 Building Blocks
With formula weights below 150, these building blocks are particularly useful for creating libraries to explore drugable chemical space while maintining the low FW required for bioavailability.
  Structure FW Chemical Name and % Purity Click Price to Add to Shopping Cart
Catalog #:   FS001110
CASRN:   210169-05-4
MFCD #:   MFCD00234073
Lead time: IN STOCK
112 3-Amino-5-fluoropyridine
(Purity >95%)
At least 9.34 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
95 155 195 295 495 895 1295  
Catalog #:   FS000313
CASRN:   5469-70-5
MFCD #:   MFCD01529869
Lead time: IN STOCK
95 3-Aminopyridazine
(Purity >95%)
At least 48.69 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
75 80 95 105 225 458 690  
Catalog #:   FS001009
CASRN:   42242-11-5
MFCD #:   MFCD02181031
Lead time: IN STOCK
119 3-Amino-pyridine-2-carbonitrile
(Purity >95%)
At least 138.6 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
75 95 195 295 890 1890 2490 2990
Catalog #:   FS002125
CASRN:   271-34-1
MFCD #:   MFCD00955936
Lead time: IN STOCK
118 5-Azaindole
(Purity >95%)
At least 53.96 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
  45 50 75 235 463 690  
Catalog #:   FS002126
CASRN:   271-29-4
MFCD #:   MFCD01686899
Lead time: IN STOCK
118 6-Azaindole
(Purity >95%)
At least 37.76 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
75 80 95 195 850 1900 2950  
Catalog #:   FS002083
CASRN:   17557-84-5
MFCD #:   MFCD01861742
Lead time: IN STOCK
108 3-Azetidinone hydrochloride
(Purity >95%)
At least 2.01 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
  345 365 378 2295 3145 3995  
  Structure FW Chemical Name and % Purity Click Price to Add to Shopping Cart
Catalog #:   FS001818
CASRN:   88211-50-1
MFCD #:   MFCD06658391
Lead time: 1 week
106 But-3-ynylamine hydrochloride
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
        1495 3495 5495  
Catalog #:   FS001029
CASRN:   929074-42-0
MFCD #:   MFCD09263519
Lead time: IN STOCK
144 5-Chloro-3,4-diaminopyridine
(Purity >95%)
At least 0.3 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
  295 395 495 648 687 1200  
Catalog #:   FS001325
CASRN:   137270-23-6
MFCD #:   MFCD09838145
Lead time: 2 weeks
124 O-Cyclobutyl-hydroxylamine hydrochloride
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
      1495 2995 4495 5995  
Catalog #:   FS001027
CASRN:   290313-23-4
MFCD #:   MFCD00174354
Lead time: IN STOCK
149 N*2*-Cyclopropyl-pyridine-2,3-diamine
(Purity >95%)
At least 1.77 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
75 75 80 100 1950 2700 3450  
Catalog #:   FS000768
CASRN:   57531-01-8
MFCD #:   MFCD06657726
Lead time: IN STOCK
142 [1,4]Diazocane-5,8-dione
(Purity >95%)
At least 6.25 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
  95 155 419 988      
Catalog #:   FS007707
CASRN:   1010097-82-1
MFCD #:   MFCD13196690
Lead time: Special Order*
134 O-(2,2-Difluoroethyl)hydroxylamine hydrochloride
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
195 395 495 995 3995 5495 6995  
  Structure FW Chemical Name and % Purity Click Price to Add to Shopping Cart
Catalog #:   FS005032
CASRN:   5918-93-4
MFCD #:   MFCD00040252
Lead time: IN STOCK
84 1,3-Dihydro-imidazol-2-one
(Purity >95%)
At least 15.42 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
195 395 495 695 1950 2973 3995  
Catalog #:   FS005033
CASRN:   1072-89-5
MFCD #:   MFCD00459895
Lead time: IN STOCK
112 4,5-Dimethyl-1,3-dihydro-imidazol-2-one
(Purity >95%)
At least 8.02 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
  95 195 493 865 2450 2950  
Catalog #:   FS001691
CASRN:   2302-39-8
MFCD #:   MFCD01646351
Lead time: IN STOCK
96 4,5-Dimethyl-1H-imidazole
(Purity >95%)
At least 13.2 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
135 195 395 895 2995 3995 4995  
Catalog #:   FS001690
CASRN:   53316-51-1
MFCD #:   MFCD09743540
Lead time: IN STOCK
133 4,5-Dimethyl-1H-imidazole; hydrochloride
(Purity >95%)
At least 6.2 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
  105 215 382 1796 2995 3995  
Catalog #:   FS001813
CASRN:   4298-52-6
MFCD #:   MFCD03425129
Lead time: IN STOCK
108 2-Ethynylthiophene
(Purity >90%)
At least 4.83 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
      395     1995 2495
Catalog #:   FS008809
CASRN:   617718-46-4
MFCD #:   MFCD05663715
Lead time: IN STOCK
112 3-Fluoroazetidine Hydrochloride
(Purity >95%)
At least 0.36 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
95 105 215   1450 4223 6995  
  Structure FW Chemical Name and % Purity Click Price to Add to Shopping Cart
Catalog #:   FS007140
CASRN:   954236-33-0
MFCD #:   MFCD09864696
Lead time: IN STOCK
126 6-Fluoro-4-methyl-pyridin-3-ylamine
(Purity >95%)
At least 93.8 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
    59 66 896 828 1993 2873
Catalog #:   FS007053
CASRN:   173435-32-0
MFCD #:   MFCD04112556
Lead time: IN STOCK
126 2-Fluoro-4-methyl-pyridin-3-ylamine
(Purity >95%)
At least 13.9 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
  345 495 948 1995 2995 3995  
Catalog #:   FS005075
CASRN:   26258-21-9
MFCD #:   MFCD03413592
Lead time: IN STOCK
138 1,3,4,5,6,7-Hexahydro-benzoimidazol-2-one
(Purity >95%)
At least 12.61 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
75 95 195 495 2295 3395 4495  
Catalog #:   FS002114
CASRN:   875-66-1
MFCD #:   MFCD00956158
Lead time: IN STOCK
146 4-Hydroxy-cinnoline
(Purity >95%)
At least 14.95 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
75 95 195 495 1995 2745 3495  
Catalog #:   FS007136
CASRN:   152922-71-9
MFCD #:   MFCD08235273
Lead time: IN STOCK
111 (1-Hydroxymethyl-cyclopropyl)-acetonitrile
(Purity >95%)
At least 10.3 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
  184 205 293 495 890 1290  
Catalog #:   FS007939
CASRN:   54709-94-3
MFCD #:   MFCD10698050
Lead time: IN STOCK
110 3-Hydroxy-5-methyl-pyridazine
(Purity >95%)
At least 39.21 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
75 80 95 108 423 790 1588  
  Structure FW Chemical Name and % Purity Click Price to Add to Shopping Cart
Catalog #:   FS007148
CASRN:   766-55-2
MFCD #:   MFCD07782103
Lead time: IN STOCK
119 Imidazo[1,2-b]pyridazine
(Purity >95%)
At least 33.8 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
    59 64 177 1525 2950  
Catalog #:   FS000701
CASRN:   288-16-4
MFCD #:   MFCD00020818
Lead time: IN STOCK
85 Isothiazole
(Purity >95%)
At least 4.35 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
  75 95 295 1295 2145 2995  
Catalog #:   FS007102
CASRN:   162515-68-6
MFCD #:   MFCD03411600
Lead time: IN STOCK
146 (1-Mercaptomethyl-cyclopropyl)-acetic acid
(Purity >95%)
At least 12.05 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
75 85 90 95 211 395 990  
Catalog #:   FS009086
CASRN:   54149-39-2
MFCD #:   MFCD09951925
Lead time: IN STOCK
91 O-(2-Methoxy-ethyl)-hydroxylamine
(Purity >95%)
At least 0.73 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
  95 195 632 995 1995 2995  
Catalog #:   FS002055
CASRN:   14315-15-2
MFCD #:   MFCD00130098
Lead time: 3 weeks
148 7-Methyl-benzo[b]thiophene
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
        1895      
Catalog #:   FS005040
CASRN:   915402-10-7
MFCD #:   MFCD08706302
Lead time: 1 Week
134 (3-Methylenecyclobutyl)methanamine Hydrochloride
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
195 295 495 950 2550 3250 3950  
  Structure FW Chemical Name and % Purity Click Price to Add to Shopping Cart
Catalog #:   FS000658
CASRN:   693-92-5
MFCD #:   MFCD00955579
Lead time: IN STOCK
99 3-methylisothiazole
(Purity >95%)
At least 1.29 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
  295 495 1495 1995 2745 3495  
Catalog #:   FS008016
CASRN:   253-72-5
MFCD #:   MFCD00059750
Lead time: IN STOCK
130 [1,6]Naphthyridine
(Purity >95%)
At least 4.76 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
  295 395 512 1995 2995 3995  
Catalog #:   FS005041
CASRN:   885267-01-6
MFCD #:   MFCD08706303
Lead time: IN STOCK
126 N'-Hydroxy-3-methylenecyclobutanecarboximidamide
(Purity >93%)
At least 4.21 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
  295 495 758 1995 2995 3995  
Catalog #:   FS000717
CASRN:   931-07-7
MFCD #:   MFCD01716903
Lead time: IN STOCK
130 4-Nitro-isothiazole
(Purity >95%)
At least 7.2 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
  495 895 2496 3596      
Catalog #:   FS007104
CASRN:   23761-23-1
MFCD #:   MFCD00100900
Lead time: IN STOCK
114 3-Oxo-cyclobutanecarboxylic acid
(Purity >95%)
At least 3.66 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
75 75 80 95 395 845 1295 2072
Catalog #:   FS011416
CASRN:   6635-88-7
MFCD #:   MFCD06657774
Lead time: IN STOCK
134 (1-Oxy-pyridin-3-yl)-acetonitrile
(Purity >95%)
At least 6.71 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
75 80 110 207 1350 2650 3950  
  Structure FW Chemical Name and % Purity Click Price to Add to Shopping Cart
Catalog #:   FS001241
CASRN:   37988-38-8
MFCD #:   MFCD00209259
Lead time: IN STOCK
137 2-Pyridin-2-yl-propan-2-ol
(Purity >95%)
At least 1.8 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
145 165 195 495 1995 4245 6495  
Catalog #:   FS005034
CASRN:   623547-65-9
MFCD #:   MFCD07357406
Lead time: IN STOCK
140 4-tert-Butyl-1,3-dihydro-imidazol-2-one
(Purity >95%)
At least 15.43 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
85 90 95 125 1650 2300 2950  
Catalog #:   FS001256
CASRN:   225647-12-1
MFCD #:   MFCD00829762
Lead time: IN STOCK
122 4,5,6,7-Tetrahydro-1H-benzoimidazole
(Purity >95%)
At least 4.17 grams in stock
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
  245 495 594 3995 5995 7995  
Catalog #:   FS010030
CASRN:   179894-05-4
MFCD #:   MFCD17012868
Lead time: 3 weeks
113 1-Acetylazetidin-3-one
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
      895 2995 3995 4995  
Catalog #:   FS007542
CASRN:   64527-28-2
MFCD #:   MFCD02598860
Lead time: 4 weeks
100 4-Amino-isothiazole
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
      1995 5995      
Catalog #:   FS009093
CASRN:   3279-95-6
MFCD #:   MFCD00517034
Lead time: 1 week
77 2-Aminooxy-ethanol
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
      890 1900 2948 3995  
  Structure FW Chemical Name and % Purity Click Price to Add to Shopping Cart
Catalog #:   FS000771
CASRN:   273-77-8
MFCD #:   MFCD00047265
Lead time: 3 weeks
136 Benzo[1,2,3]thiadiazole
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
      1350 2950 3950 4950  
Catalog #:   FS001107
CASRN:   38186-84-4
MFCD #:   MFCD04972391
Lead time: Special Order*
146 2-Chloro-5-fluoro-6-methylpyridine
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
        1995 2495 2995  
Catalog #:   FS000659
CASRN:   20067-16-7
MFCD #:   MFCD08706054
Lead time: 3 weeks
134 5-Chloro-3-methyl-isothiazole
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
      1995 3495 4223 4950  
Catalog #:   FS001092
CASRN:   22620-34-4
MFCD #:   MFCD09743969
Lead time: 3 weeks
144 (5-Chloro-pyridin-3-yl)-methanol
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
        2450 3365 4280  
Catalog #:   FS001091
CASRN:   189449-41-0
MFCD #:   MFCD09743993
Lead time: Special Order*
144 (4-Chloro-pyridin-3-yl)-methanol
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
            1450  
Catalog #:   FS005058
CASRN:   526183-12-0
MFCD #:   MFCD05190093
Lead time: Special Order*
139 2-Cyclobutyl-piperidine
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
    850   2990 3993 4995  
  Structure FW Chemical Name and % Purity Click Price to Add to Shopping Cart
Catalog #:   FS005044
CASRN:   122813-75-6
MFCD #:   MFCD00116489
Lead time: Special Order*
131 1-Cyclopropylhydrazinecarbothioamide
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
      995 2141 3045 3949  
Catalog #:   FS005300
CASRN:   7544-75-4
MFCD #:   MFCD00790772
Lead time: 6 weeks
121 4,5-Dihydro-3H-pyrrol-2-ylamine hydrochloride
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
        2495 3495 4495  
Catalog #:   FS005021
CASRN:   83335-28-8
MFCD #:   MFCD02823969
Lead time: Special Order*
138 2-Ethenylthio-pyrimidine
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
        2995 3995 4995  
Catalog #:   FS005046
CASRN:   83962-06-5
MFCD #:   MFCD00138066
Lead time: 3 weeks
112 4-Ethyl-1,3-dihydro-imidazol-2-one
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
        2495 3245 3995  
Catalog #:   FS000667
CASRN:   272-97-9
MFCD #:   MFCD08062980
Lead time: 2 weeks
119 3H-Imidazo[4,5-c]pyridine
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
      1995 3995 5495 6995  
Catalog #:   FS010001
CASRN:   148644-09-1
MFCD #:   MFCD06804514
Lead time: 1 week
124 3-Methoxyazetidine hydrochloride
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
      595 1295 2393 3490  
  Structure FW Chemical Name and % Purity Click Price to Add to Shopping Cart
Catalog #:   FS009027
CASRN:   51517-01-2
MFCD #:   MFCD10032391
Lead time: 3 weeks
159 2-Methoxyethanesulfonyl chloride
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
          2995 3995  
Catalog #:   FS010003
CASRN:   959957-92-7
MFCD #:   MFCD11849029
Lead time: Special Order*
86 1-Methylazetidin-3-amine
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
      995 1995 3495 4995  
Catalog #:   FS000668
CASRN:   63604-59-1
MFCD #:   MFCD08062981
Lead time: 3 weeks
133 2-Methyl-3H-imidazo[4,5-c]pyridine
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
        2995 4990    
Catalog #:   FS000716
CASRN:   693-97-0
MFCD #:   MFCD00003160
Lead time: Special Order*
99 5-Methyl-isothiazole
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
        2995 4495 5995  
Catalog #:   FS010913
CASRN:   99838-33-2
MFCD #:   MFCD09834619
Lead time: Special Order*
137 8-Methyl-3-methylene-8-aza-bicyclo[3.2.1]octane
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
        1895 2695 3495  
Catalog #:   FS007295
CASRN:   1073-19-4
MFCD #:   MFCD11036121
Lead time: Special Order*
144 5-Methyl-4-nitro-isothiazole
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
      1950 3990 5490 6990  
  Structure FW Chemical Name and % Purity Click Price to Add to Shopping Cart
Catalog #:   FS007296
CASRN:   1073-18-3
MFCD #:   MFCD11036122
Lead time: Special Order*
144 3-Methyl-4-nitro-isothiazole
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
      1390 3990 6945 9900  
Catalog #:   FS010791
CASRN:   847818-55-7
MFCD #:   MFCD09972098
Lead time: Special Order*
162 1-Methyl-1H-pyrazole-4-boronic acid hydrochloride
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
          3245 4995  
Catalog #:   FS009500
CASRN:   763120-58-7
MFCD #:   MFCD07368251
Lead time: 7 weeks
112 Pyrazole-4-boronic acid
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
      895 1495 2745 3995  
Catalog #:   FS002110
CASRN:   272-15-1
MFCD #:   MFCD08706439
Lead time: Special Order*
136 Thieno[2,3-d]pyridazine
(Purity >95%)
Price in US dollars
10
mg
100
mg
250
mg
1g 5g 10g 20g 50g
        1995 3495 4995  


*Note concerning Special Order chemicals: these are made to order with a typical lead time of 6 weeks.
Minimum order sizes apply (usually 1 gram).
Prices are listed in the catalog for available quantities only.
BUY CHEMICALS



Focus Synthesis Phone: (858)-259-0121 (direct line, Mon-Fri 7:00 am-5:00 pm PST), 888-739-6041 (toll free, USA only).

Copyright © 2004 - 2014 Focus Synthesis LLC.