Molecular Building Blocks

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Amino Acids

Browse our extensive library of 8,500+ high-purity amino acid building blocks — from standard proteinogenic variants to complex unnatural, fluorinated, and isotope-labeled derivatives.

Showing 113 compounds

In StockHot

D-Alanine

CAT: SYN-D001

CAS: 700-58-3

Purity: ≥99%

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D-Phenylalanine

CAT: SYN-D002

CAS: 1492-24-6

Purity: ≥99%

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D-Leucine

CAT: SYN-D003

CAS: 921-02-8

Purity: ≥99%

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D-Valine

CAT: SYN-D004

CAS: 526-06-7

Purity: ≥99%

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D-Tryptophan

CAT: SYN-D005

CAS: 4294-15-7

Purity: ≥98.5%

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D-Methionine

CAT: SYN-D006

CAS: 643-84-5

Purity: ≥99%

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D-Tyrosine

CAT: SYN-D007

CAS: 1114-17-4

Purity: ≥99%

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D-Isoleucine

CAT: SYN-D008

CAS: 1509-05-3

Purity: ≥98%

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D-Histidine

CAT: SYN-D009

CAS: 2043-43-8

Purity: ≥99%

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D-Lysine

CAT: SYN-D010

CAS: 1676-71-7

Purity: ≥98%

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D-Proline

CAT: SYN-D011

CAS: 157-03-9

Purity: ≥99%

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D-Arginine

CAT: SYN-D012

CAS: 6287-26-9

Purity: ≥98%

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L-Alanine

CAT: SYN-L001

CAS: 56-41-7

Purity: ≥99%

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L-Phenylalanine

CAT: SYN-L002

CAS: 63-91-2

Purity: ≥99%

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L-Leucine

CAT: SYN-L003

CAS: 61-90-5

Purity: ≥99%

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L-Valine

CAT: SYN-L004

CAS: 72-18-4

Purity: ≥99%

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L-Tryptophan

CAT: SYN-L005

CAS: 73-22-3

Purity: ≥98.5%

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L-Methionine

CAT: SYN-L006

CAS: 63-68-3

Purity: ≥99%

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L-Tyrosine

CAT: SYN-L007

CAS: 60-18-4

Purity: ≥99%

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L-Isoleucine

CAT: SYN-L008

CAS: 73-32-5

Purity: ≥99%

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L-Histidine

CAT: SYN-L009

CAS: 71-00-1

Purity: ≥99%

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L-Lysine

CAT: SYN-L010

CAS: 56-87-1

Purity: ≥99%

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L-Proline

CAT: SYN-L011

CAS: 147-85-3

Purity: ≥99%

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L-Arginine

CAT: SYN-L012

CAS: 74-79-3

Purity: ≥99%

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DL-Alanine

CAT: SYN-DL001

CAS: 302-72-7

Purity: ≥99%

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DL-Phenylalanine

CAT: SYN-DL002

CAS: 150-30-1

Purity: ≥99%

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DL-Leucine

CAT: SYN-DL003

CAS: 328-38-1

Purity: ≥99%

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DL-Valine

CAT: SYN-DL004

CAS: 516-06-3

Purity: ≥99%

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DL-Methionine

CAT: SYN-DL005

CAS: 59-51-8

Purity: ≥99%

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DL-Tryptophan

CAT: SYN-DL006

CAS: 333-27-7

Purity: ≥98%

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β-Alanine

CAT: SYN-BA001

CAS: 107-95-9

Purity: ≥99%

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(R)-β-Phenylalanine

CAT: SYN-BA002

CAS: 1078-21-3

Purity: ≥97%

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(S)-β-Phenylalanine

CAT: SYN-BA003

CAS: 14205-85-7

Purity: ≥97%

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β-Leucine

CAT: SYN-BA004

CAS: 2566-33-8

Purity: ≥95%

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Fmoc-β-Alanine

CAT: SYN-BA005

CAS: 3819-99-6

Purity: ≥98%

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Boc-β-Alanine

CAT: SYN-BA006

CAS: 82659-42-5

Purity: ≥98%

In StockHot

γ-Aminobutyric Acid (GABA)

CAT: SYN-GA001

CAS: 56-12-2

Purity: ≥99%

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γ-Aminobutyric Acid-d6

CAT: SYN-GA002

CAS: 353-09-3

Purity: ≥98% (isotopic)

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Fmoc-GABA-OH

CAT: SYN-GA003

CAS: 2716-42-1

Purity: ≥98%

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γ-Aminobutyryl Chloride HCl

CAT: SYN-GA004

CAS: 1115-69-1

Purity: ≥97%

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Fmoc-L-Alanine

CAT: SYN-F001

CAS: 35661-39-3

Purity: ≥98.5%

In StockHot

Fmoc-L-Phenylalanine

CAT: SYN-F002

CAS: 35661-60-0

Purity: ≥99%

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Fmoc-L-Leucine

CAT: SYN-F003

CAS: 35661-40-6

Purity: ≥98.5%

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Fmoc-Glycine

CAT: SYN-F004

CAS: 71989-31-6

Purity: ≥99%

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Fmoc-L-Valine

CAT: SYN-F005

CAS: 84499-24-1

Purity: ≥98%

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Fmoc-L-Proline

CAT: SYN-F006

CAS: 71989-26-9

Purity: ≥99%

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Fmoc-L-Lysine(Boc)

CAT: SYN-F007

CAS: 119478-56-7

Purity: ≥99%

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Fmoc-L-Glutamic Acid(OtBu)

CAT: SYN-F008

CAS: 71989-38-3

Purity: ≥98%

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Fmoc-L-Arginine(Pbf)

CAT: SYN-F009

CAS: 130304-80-2

Purity: ≥99%

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Fmoc-L-Serine(tBu)

CAT: SYN-F010

CAS: 73530-26-4

Purity: ≥98%

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Fmoc-L-Threonine(tBu)

CAT: SYN-F011

CAS: 71989-33-8

Purity: ≥98%

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Fmoc-L-Tryptophan(Boc)

CAT: SYN-F012

CAS: 132684-60-7

Purity: ≥98%

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Boc-L-Alanine

CAT: SYN-B001

CAS: 15761-38-3

Purity: ≥98%

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Boc-L-Phenylalanine

CAT: SYN-B002

CAS: 13734-34-4

Purity: ≥98%

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Boc-L-Leucine

CAT: SYN-B003

CAS: 13139-15-6

Purity: ≥98%

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Boc-Glycine

CAT: SYN-B004

CAS: 1676-75-1

Purity: ≥99%

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Boc-L-Valine

CAT: SYN-B005

CAS: 13734-38-8

Purity: ≥98%

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Boc-L-Proline

CAT: SYN-B006

CAS: 15761-39-4

Purity: ≥99%

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Cbz-L-Alanine

CAT: SYN-C001

CAS: 1146-20-9

Purity: ≥98%

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Cbz-L-Phenylalanine

CAT: SYN-C002

CAS: 13734-34-5

Purity: ≥98%

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Cbz-L-Leucine

CAT: SYN-C003

CAS: 4403-63-2

Purity: ≥98%

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Cbz-Glycine

CAT: SYN-C004

CAS: 1138-80-3

Purity: ≥99%

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Cbz-L-Proline

CAT: SYN-C005

CAS: 1726-07-4

Purity: ≥98%

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L-Proline

CAT: SYN-CY001

CAS: 147-85-3

Purity: ≥99%

In StockHot

cis-4-Hydroxy-L-Proline

CAT: SYN-CY002

CAS: 29763-99-3

Purity: ≥98%

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trans-4-Hydroxy-L-Proline

CAT: SYN-CY003

CAS: 618-27-9

Purity: ≥99%

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1-Aminocyclopropane-1-carboxylic Acid

CAT: SYN-CY004

CAS: 5765-44-6

Purity: ≥98%

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Bicyclo[2.2.1]heptane Amino Acid

CAT: SYN-BI001

CAS: 80256-39-9

Purity: ≥95%

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2-Azabicyclo[2.2.1]heptane-3-carboxylic Acid

CAT: SYN-BI002

CAS: 99295-07-5

Purity: ≥95%

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Bicyclo[1.1.1]pentane Amino Acid

CAT: SYN-BI003

CAS: 748139-73-7

Purity: ≥90%

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L-Propargylglycine

CAT: SYN-AL001

CAS: 39162-75-9

Purity: ≥97%

In StockHot

L-Homopropargylglycine

CAT: SYN-AL002

CAS: 14679-82-2

Purity: ≥95%

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Fmoc-L-Propargylglycine

CAT: SYN-AL003

CAS: 1134819-04-7

Purity: ≥96%

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Boc-L-Propargylglycine

CAT: SYN-AL004

CAS: 82211-23-2

Purity: ≥96%

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4-Fluoro-L-Phenylalanine

CAT: SYN-FL001

CAS: 456-88-2

Purity: ≥98%

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D,L-β-Fluoroalanine

CAT: SYN-FL002

CAS: 372-12-3

Purity: ≥97%

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6-Fluoro-L-Tryptophan

CAT: SYN-FL003

CAS: 1132-68-9

Purity: ≥97%

In StockHot

Trifluoromethyl-L-Alanine

CAT: SYN-FL004

CAS: 114926-37-3

Purity: ≥95%

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5-Fluoro-L-Tryptophan

CAT: SYN-FL005

CAS: 1132-53-0

Purity: ≥98%

In StockHot

L-Azidohomoalanine (AHA)

CAT: SYN-AZ001

CAS: 42002-35-7

Purity: ≥97%

In StockHot

Fmoc-L-Azidohomoalanine

CAT: SYN-AZ002

CAS: 1353016-70-2

Purity: ≥95%

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4-Azido-L-Phenylalanine

CAT: SYN-AZ003

CAS: 84224-27-1

Purity: ≥95%

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Fmoc-4-Azido-L-Phenylalanine

CAT: SYN-AZ004

CAS: 1307322-60-2

Purity: ≥95%

In Stock

O-GlcNAc-L-Serine

CAT: SYN-GLY001

CAS: 60110-22-7

Purity: ≥90%

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O-GlcNAc-L-Threonine

CAT: SYN-GLY002

CAS: 60110-23-8

Purity: ≥90%

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Fmoc-Ser(Glc)-OH

CAT: SYN-GLY003

CAS: 87530-33-6

Purity: ≥90%

In Stock

BODIPY-FL-L-Cystine

CAT: SYN-FA001

CAS: 93590-40-2

Purity: ≥90%

In Stock

TAMRA-L-Lysine

CAT: SYN-FA002

CAS: 1161403-34-4

Purity: ≥90%

In StockHot

Fmoc-Lys(FITC)-OH

CAT: SYN-FA003

CAS: 503551-87-1

Purity: ≥90%

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Fmoc-Lys(Cy3)-OH

CAT: SYN-FA004

CAS: 1428249-26-8

Purity: ≥85%

In StockHot

L-Phenylalaninol

CAT: SYN-AO001

CAS: 2799-17-9

Purity: ≥98%

In StockHot

L-Prolinol

CAT: SYN-AO002

CAS: 5267-62-9

Purity: ≥98%

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L-Leucinol

CAT: SYN-AO003

CAS: 7533-40-6

Purity: ≥97%

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L-Valinol

CAT: SYN-AO004

CAS: 2851-03-0

Purity: ≥98%

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L-Tryptophanol

CAT: SYN-AO005

CAS: 2799-19-1

Purity: ≥97%

In Stock

Boc-L-Phenylalaninal

CAT: SYN-ALD001

CAS: 141699-55-0

Purity: ≥95%

In Stock

Boc-L-Leucinal

CAT: SYN-ALD002

CAS: 100963-12-0

Purity: ≥95%

In Stock

Boc-L-Alaninal

CAT: SYN-ALD003

CAS: 95622-97-2

Purity: ≥95%

In Stock

L-[1-¹³C]Alanine

CAT: SYN-IS001

CAS: 17854-52-3

Purity: ≥99% (isotopic)

In Stock

L-[U-¹³C₆]Leucine

CAT: SYN-IS002

CAS: 91453-04-0

Purity: ≥99% (isotopic)

In Stock

L-[¹⁵N]Alanine

CAT: SYN-IS003

CAS: 15763-00-5

Purity: ≥99% (isotopic)

In Stock

Glycine-d₅

CAT: SYN-IS004

CAS: 13060-65-6

Purity: ≥99% (isotopic)

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L-[ring-d₅]Phenylalanine

CAT: SYN-IS005

CAS: 70833-68-2

Purity: ≥99% (isotopic)

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L-Norvaline

CAT: SYN-UN001

CAS: 22818-40-2

Purity: ≥99%

In StockHot

L-Norleucine

CAT: SYN-UN002

CAS: 616-06-8

Purity: ≥99%

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L-Homophenylalanine

CAT: SYN-UN003

CAS: 6028-28-0

Purity: ≥98%

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α-Aminoisobutyric Acid (Aib)

CAT: SYN-UN004

CAS: 1113-41-3

Purity: ≥99%

In Stock

L-Ornithine

CAT: SYN-UN005

CAS: 1196-15-8

Purity: ≥99%

In Stock

L-Citrulline

CAT: SYN-UN006

CAS: 19767-45-4

Purity: ≥98%

In Stock

3-Nitro-L-Tyrosine

CAT: SYN-UN007

CAS: 4125-96-0

Purity: ≥97%

In StockHot

Fmoc-S5-OH (Olefinic Stapling AA)

CAT: SYN-SP001

CAS: 1276061-64-9

Purity: ≥95%

In StockHot

Fmoc-R8-OH (Olefinic Stapling AA)

CAT: SYN-SP002

CAS: 1276062-55-5

Purity: ≥95%

In Stock

Fmoc-α-methyl-L-Phenylalanine

CAT: SYN-SP003

CAS: 134365-06-3

Purity: ≥96%