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Building blocks

Synthon-Lab has about 5000 of building blocks and intermediates in stock. Most of compounds meet 95+% wt. purity confirmed by 1H NMR. Quantity and pricing vary in wide range and are provided upon inquiry. In-stock compounds can be delivered within 1–2 weeks (delivery period can be longer in case of large orders).

In-stock HTS compounds and in-stock building blocks are compiled into the common Cumulative database of in-stock compounds and can be searched separately.

Even if you cannot find your particular compound in our databases we will be pleased to help you in your work. Having a wide experience in organic synthesis Synthon-Lab can synthesize especially for you exactly those building block or intermediate that you need. For example we call your attention to a list of common structures of different classes which are easily accessible for us. If you are interested in these or analogous compounds, we can offer you fast and cost-effective solutions.


For the convenience you can download building block scaffolds as in the tables below in a single file: see Download section.

(Alk = alkyl, Ar = aryl, Hal = halogen, Bn = benzyl, Het = heterocycle)

Carboxylic acids
NStructureSubstituents
CA0001R1, R2, R3 = H, Hal, Alk, AlkO, BnO
CA0002R1, R2, R3 = H, Hal, Alk, AlkO
CA0003R1, R2, R3 = H, Hal, Alk, AlkO
CA0004R1, R2, R3 = H, Hal, Alk, AlkO, BnO
CA0005X = H, Me
R1, R2 = H, Hal, Alk, AlkO, BnO
R3 = H, Me
CA0006R = Alk, Ar, Bn
CA0007R = Alk, Bn
CA0008R = H, Alk, Bn
X = H, Me, Cl
CA0009R = H, Alk, AlkO, Hal
CA0010R1 = H, Alk
R2 = Alk, Ar
CA0011R = H, Alk, Bn
CA0012R = H, Alk, Ar
CA0013R1 = H, Alk
R2 = Alk, Ar, Het
CA0014R = Alk, Bn
CA0015R1 = Alk, Ar, Het
R2 = H, Alk, Bn
CA0016R = Alk, AlkO, Hal
CA0017R1 = Alk, Ar, Het
R2 = Alk, Ar
CA0018R = Alk, Ar, Het
CA0019R = H, Alk, AlkO, Hal, Het
CA0020R1 = Ar, Het
R2 = Alk, Ar
CA0021R = Alk, AlkO, Hal
CA0022R = H, Hal
CA0023R = H, Hal
CA0024R = H, Hal
CA0025R1 = Ar
R2 = n-Alk
CA0026R1, R2, R3 = H, Hal, Alk, AlkO, BnO
CA0027R1, R2, R3 = H, Hal, Alk, AlkO, BnO
CA0028R1, R2, R3 = H, Hal, Alk, AlkO, BnO
CA0029R1, R2, R3 = H, Hal, Alk, AlkO, BnO
CA0030R1, R2 = H, Hal, Alk, AlkO, BnO
CA0031R1, R2, R3 = H, Hal, Alk, AlkO, BnO
CA0032R1, R2, R3 = H, Hal, Alk, AlkO, BnO
CA0033R = H, Me, Cl
CA0034R1, R2, R3 = H, Hal, Alk, AlkO, BnO
R4 = Alk
CA0035R = H, Alk, Ar
CA0036R = H, Hal
CA0037R = H, Me, Cl
CA0038R = Ar, Het
CA0039 
CA0040 

Carbonyl chlorides
NStructureSubstituents
CC0001R1, R2, R3 = H, Hal, Alk, AlkO, BnO
CC0002R1, R2 = H, Hal, Alk, AlkO, BnO
R3 = H, Me

Sulfonyl chlorides
NStructureSubstituents
SC0001R1, R2, R3 = H, Hal, Alk, AlkO

Aldehydes and ketones
NStructureSubstituents
AK0001R1, R2, R3 = H, Hal, Alk, AlkO, BnO, N(Alk)2
AK0002R1, R2, R3 = H, Hal, Alk, AlkO
X = Me, Et, n-Pr, i-Pr
AK0003R = Alk, Ar, Het
AK0004R = Alk, Ar, Het
X = Me, Et, n-Pr
AK0005R = Alk, Bn
AK0006R = Alk, Ar
AK0007R = Alk, Bn
X = H, Me
AK0008R = H, Alk, Bn
X = Me, Et, n-Pr, i-Pr, c-Pr, Ar, Het
CA0026R1, R2, R3 = H, Hal, Alk, AlkO, BnO
AK0010R = Alk, Ar, Het
AK0011R = H, Alk, AlkO, Hal
AK0012R1, R2 = H, Alk, AlkO, Hal

α-Haloketones and benzyl-type halides
NStructureSubstituents
HH0001R1, R2, R3 = H, Hal, Alk, AlkO
HH0002R = Alk, Ar, Het
HH0003R = H, Alk, AlkO, Hal, Het
HH0004R = Alk, Ar
HH0005R1 = H, Me
R2 = H, Alk
HH0006R = H, Alk, AlkO, Hal

Alkyl and aryl halides
NStructureSubstituents
AH0001R1, R2, R3 = H, Hal, Alk, AlkO
n = 2–4
AH0002R = Ar, Het

Amines
NStructureSubstituents
AM0001R1, R2, R3 = H, Hal, Alk, AlkO, BnO, N(Alk)2
AM0002R1, R2, R3 = H, Hal, Alk, AlkO, BnO
AM0003R1, R2, R3 = H, Hal, Alk, AlkO
AM0004R1, R2, R3 = H, Hal, Alk, AlkO
AM0005R1, R2, R3 = H, Hal, Alk, AlkO
X = Me, Et, n-Pr, i-Pr
AM0006R1, R2, R3 = H, Hal, Alk, AlkO
n = 2–4
AM0007R1, R2, R3 = H, Hal, Alk, AlkO
n = 2–4
AM0008R = Alk, Bn
X = H, Alk
AM0009R = Alk, Bn
AM0010R = H, Alk, Bn
AM0011R = CN, CO2Alk, CONHAr
AM0012R = CN, CO2Alk, CONHAr
AM0013R1 = Alk
R2 = H, Alk
AM0014R1 = H, Alk, AlkO, Hal
R2 = H, Alk
AM0015R = Alk, AlkO, Hal, BnO
AM0016R1 = Alk, Bn
R2 = H, Me
CA0012R = H, Alk, Ar
AM0018R1 = H, Alk
R2 = Alk, Ar, Het
AM0019R1 = Alk, Ar, Het
R2 = Alk, Bn
TH0002R = Alk, Ar, Het
AM0020R = Alk, CF3
AM0021R1 = Alk, Ar
R2 = H, Ar
AM0022R1 = AlkO, AlkNH, ArNH, Alk2N
R2 = H, Ar, Het
CA0021R = Alk, AlkO, Hal
AM0024 
AM0025R1 = H, Alk, AlkO, Hal
R2 = Ar
AM0026R1 = H, Alk, AlkO, Hal
R2 = Ar
AM0027R = H, Hal
AM0028R = H, Hal
AM0029R = H, Hal
AM0030R = Alk, Ar, Bn
AM0031R1 = H, Alk
R2 = Alk
AM0032R1 = H, Alk, AlkO, Hal
R2 = Alk
CA0030R1, R2 = H, Hal, Alk, AlkO, BnO
AM0034R1 = Bn, Ar
R2, R3 = H, Hal, Alk, AlkO, BnO
AM0035R = Ar, Het
AM0036R = Ar, Het
AM0037R = H, Alk, AlkO, Hal
AM0038R = H, Hal
AM0039R1, R2 = H, Alk, AlkO, Hal

Thiols
NStructureSubstituents
TH0001R1 = Alk, Ar, Het
R2 = Alk, Ar
TH0002R = Alk, Ar, Het

Alcohols
NStructureSubstituents
AL0001R1, R2, R3 = H, Hal, Alk, AlkO
CA0027R1, R2, R3 = H, Hal, Alk, AlkO, BnO
AL0003R = H, Alk, Hal
AL0004R = H, Alk, Ar
AL0005R = H, Me, Cl
AL0006R = H, Me, Cl
AL0007R = Ar, Het

Isocyanates and isothiocyanates
NStructureSubstituents
IT0001R = Alk, Ar
IT0002R = Alk, Ar, Bn