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Heterocycles (5-membered ring)

*Note concerning Special Order chemicals: these are made to order in 1 to 8 weeks.
The minimum order size is 1, 5, or 20 grams. Prices are listed in the catalog for available quantities only.
Catalog
Number
CASRN Structure Availability FW Chemical Name Purity  
FS000662 41808-35-9 In Stock 139 5-Amino-3-methyl-isothiazole-4-carbonitrile
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 195 395 995 1995 2995
FS000696 147330-32-3 In Stock 222 5-Biphenyl-2-yl-2H-tetrazole
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 145 295 495    
FS002208 188890-74-6 In Stock 222 5-Biphenyl-3-yl-2H-tetrazole, 99% pure
>99%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 145 295 495 1995  
FS002209 62778-17-0 In Stock 222 5-Biphenyl-4-yl-2H-tetrazole, 99% pure
>99%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 95 225 395 1895  
FS000661 85508-99-2 In Stock 193 4-Bromo-3-methyl-isothiazol-5-ylamine
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 95 195 495 1995 3995
Catalog
Number
CASRN Structure Availability FW Chemical Name Purity  
FS000660 20493-60-1 In Stock 178 5-Bromo-3-methyl-isothiazole
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      1250 4250  
FS001166 1423-61-6 In Stock 213 7-Bromo-benzo[b]thiophene
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
    75 95 360 1390
FS007457 24340-77-0 In Stock 164 4-Bromo-isothiazole
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      995 2995 5995
FS000462 850348-66-2 In Stock 259 2-(4-Bromo-phenoxymethyl)-[1,3]dioxolane
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      95 450 1750
FS000463 850348-68-4 In Stock 259 2-(3-Bromo-phenoxymethyl)-[1,3]dioxolane
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      95 450 1750
FS000464 850348-70-8 In Stock 259 2-(2-Bromo-phenoxymethyl)-[1,3]dioxolane
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      95 450 1750
Catalog
Number
CASRN Structure Availability FW Chemical Name Purity  
FS005052 6794-70-3 In Stock 239 4-(4-Bromo-phenyl)-1,3-dihydro-imidazol-2-one
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 95 195 495 1495 2995
FS000719 850349-06-3 In Stock 224 4-(2-Bromo-phenyl)-oxazole
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
195 495 995      
FS000351 915402-26-5 In Stock 220 Z-1-(5-Bromo-thiophen-2-yl)-ethanone oxime
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      145 650 2250
FS000573 3034-55-7 In Stock 164 5-Bromothiazole
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      395 995 2495
FS001088 161942-89-8 In Stock 221 4-Bromothiophene-2-acetic acid
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 145 295 495 1995 3995
FS005034 623547-65-9 In Stock 140 4-tert-Butyl-1,3-dihydro-imidazol-2-one
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 95 195 395 1650 2950
Catalog
Number
CASRN Structure Availability FW Chemical Name Purity  
FS005026 864685-45-0 In Stock 210 5-tert-Butyl-2-(3-methyl-butyl)-2,4-dihydro-pyrazol-3-one
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75          
FS008013 273221-94-6 In Stock 240 4-Cyano-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester
>98%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      950 2495 6995
FS005032 5918-93-4 In Stock 84 1,3-Dihydro-imidazol-2-one
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
95 195 395 950 2995 4995
FS005033 1072-89-5 In Stock 112 4,5-Dimethyl-1,3-dihydro-imidazol-2-one
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 95 195 495 1950 2950
FS001691 2302-39-8 In Stock 96 4,5-Dimethyl-1H-imidazole
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 195 395 995 2995 4995
FS001690 53316-51-1 In Stock 133 4,5-Dimethyl-1H-imidazole; hydrochloride
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 95 195 495 1950 3950
Catalog
Number
CASRN Structure Availability FW Chemical Name Purity  
FS001006 51642-03-6 In Stock 172 1,1-Dioxo-tetrahydrothiophen-3-ylamine, hydrochloride
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
    75 145 550 1650
FS000471 23145-22-4 In Stock 208 2-([1,3]Dioxolan-2-ylmethoxy)-benzaldehyde
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      95 450 1750
FS000472 850348-84-4 In Stock 208 3-([1,3]Dioxolan-2-ylmethoxy)-benzaldehyde
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      95 450 1750
FS000539 864754-17-6 In Stock 280 1-[1,3]Dioxolan-2-ylmethyl-4-(4,4,5,5-tetramethyl-[1,3,2]diox
aborolan-2-yl)-1H-pyrazole
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
80 95 145 295 1295 3250
FS000476 850348-88-8 In Stock 252 Ethyl-3-([1,3]dioxolan-2-ylmethoxy)-benzoate
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      95 450 1750
FS001813 4298-52-6 In Stock 108 2-Ethynylthiophene
>90%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      395 995 2495
Catalog
Number
CASRN Structure Availability FW Chemical Name Purity  
FS008012 203866-13-1 In Stock 233 (2S,4S)-4-Fluoro-1-tert-butoxycarbonyl-pyrrolidine-2-carboxyl
ic acid
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
95 295 495 950 1995 4995
FS000468 850348-78-6 In Stock 198 2-(4-Fluoro-phenoxymethyl)-[1,3]dioxolane
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      95 450 1750
FS000469 850348-80-0 In Stock 198 2-(3-Fluoro-phenoxymethyl)-[1,3]dioxolane
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      95 450 1750
FS000470 850348-82-2 In Stock 198 2-(2-Fluoro-phenoxymethyl)-[1,3]dioxolane
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      95 450 1750
FS008010 338454-45-8 In Stock 158 5-hydroxymethylthiophene-2-boronic acid
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 145 245 495 1495 2995
FS000701 288-16-4 In Stock 85 Isothiazole
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      950 3995  
Catalog
Number
CASRN Structure Availability FW Chemical Name Purity  
FS000474 850348-86-6 In Stock 210 2-(3-Methoxy-phenoxymethyl)-[1,3]dioxolane
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      95 450 1750
FS010791 847818-55-7 In Stock 126 1-Methyl-1H-pyrazole-4-boronic acid hydrochloride
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 245 495 995 2495 4995
FS000568 936250-20-3 In Stock 208 3-Methyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-
pyrazole
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 195 295 495 1995 3495
FS000467 850348-76-4 In Stock 259 2-(2-Methyl-phenoxymethyl)-[1,3]dioxolane
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      95 450 1750
FS010803 761446-44-0 In Stock 208 1-Methyl-pyrazole-4-boronic acid pinacol ester
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 80 95 195 495 1495
FS000658 693-92-5 In Stock 99 3-methylisothiazole
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      995 3995  
Catalog
Number
CASRN Structure Availability FW Chemical Name Purity  
FS000717 931-07-7 In Stock 130 4-Nitro-isothiazole
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
195 495 950 1950 5950  
FS000473 179246-35-6 In Stock 225 2-(4-Nitro-phenoxymethyl)-[1,3]dioxolane
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
      95 450 1750
FS005063 6794-69-0 In Stock 160 4-Phenyl-1,3-dihydro-imidazol-2-one
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
75 95 195 495 1495 2995
FS008011 659731-18-7 In Stock 191 3-(1-pyrrolidinyl)phenylboronic acid
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
95 195 395 995 1995 4995
FS000903 269410-08-4 In Stock 194 4,4,5,5-Tetramethyl-2-(1h-pyrazol-4-yl)-1,3,2-dioxaborolane
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
    75 195 495 995
FS000541 864754-19-8 In Stock 290 4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1-thiophen-2
-ylmethyl-1H-pyrazole
>95%
Price in US$
10
mg
100
mg
250
mg
1g 5g 20g
95 295 495 950 2495 4995
Catalog
Number
CASRN Structure Availability FW Chemical Name Purity  
FS000543 864754-20-1 In Stock 285 4-[4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-pyrazol-1
-ylmethyl]-pyridine
>95%
Price in US$
10
mg