Amino Acids

Organic compounds composed of a central carbon atom, a carboxyl group, an amino group, and a unique side chain; precursors to other molecules including proteins, hormones, and neurotransmitters.

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2,416 – 2,430 of 35,795 results

2,416

Medchemexpress LLC Biotin-PEG4-OH | 1217609-84-1 | 98.0% | 50 MG

Biotin-PEG4-OH is a PEG-based PROTAC linker that can be used in the synthesis of PROTAC.

Peg-based PROTAC linker
Used in synthesis of PROTAC

Pricing & Availability

2,417

Medchemexpress LLC Fmoc-Dha-OH | 261522-33-2 | MFCD09263343 | 99.6% | 309.32 g/mol | C18H15NO4 | 10 MG

Fmoc-Dha-OH is an Fmoc-protected dehydroalanine (Dha) amino acid derivative provided for research use in peptide synthesis and chemical biology. It is designed to enable incorporation of dehydroalanine residues during solid-phase peptide synthesis and to support downstream chemical modifications in biological research applications.

Fmoc-protected dehydroalanine suitable for peptide synthesis.
High purity reported by the manufacturer (99.63%).
Available in milligram-scale pack sizes for small-scale research use.
Compatible with standard solid-phase peptide synthesis protocols.
Enables introduction of dehydroalanine residues for further chemical modifications.

Pricing & Availability

2,418

Medchemexpress LLC H-Ser(tBu)-OMe.HCl | 17114-97-5 | 99.2% | 211.69 | 500 G

H-Ser(tBu)-OMe.HCl is a serine derivative primarily used for research purposes. As an amino acid derivative, it belongs to a class of compounds commercially utilized as ergogenic supplements, known for their influence on anabolic hormone secretion, fuel supply during exercise, and enhancement of mental performance during stressful tasks. These derivatives can also help prevent exercise-induced muscle damage, making them recognized as beneficial dietary substances.

Serine derivative
Used for research applications
Influences anabolic hormone secretion
Supplies fuel during exercise
Enhances mental performance during stress
Prevents exercise-induced muscle damage

Pricing & Availability

2,419

STA Pharmaceutical Fmoc-L-Ser(tBu)-L-SerPsi(Me, Me)Pro-OH | 10 g | CAS 1000164-43-1 | MDL MFCD11974988

Fmoc-L-Ser(tBu)-L-SerPsi(Me, Me)Pro-OH is a Amino Acid reagent (Subcategory: Pseudo AA) sold by WuXi TIDES. Offered in 10 g. Store at 4 °C. SDS available for reference.

Specifications
- CAS: 1000164-43-1
- MDL: MFCD11974988
- InChIKey: OXEDICXRSSILSN-GOTSBHOMSA-N
- Molecular Weight: 510.587
- Molecular Formula: C28H34N2O7
- Purity: ≥95%
- Container Type: 60 mL HDPE
- Pack Size: 10 g
- Net Weight: 10 g
- Gross Weight: 25 g
- Commodity Code: 29349990
- Country Of Origin: China
- IUPAC: (S)-3-(N-(((9H-fluoren-9-yl)methoxy)carbonyl)-O-(tert-butyl)-L-seryl)-2,2-dimethyloxazolidine-4-carboxylic acid
- SMILES: CC(OC[C@@H](C(N1[C@@H](COC1(C)C)C(O)=O)=O)NC(OCC2C3=CC=CC=C3C4=CC=CC=C42)=O)(C)C

Pricing & Availability

2,420

STA Pharmaceutical Fmoc-L-Ser(tBu)-L-SerPsi(Me, Me)Pro-OH | 100 g | CAS 1000164-43-1 | MDL MFCD11974988

Fmoc-L-Ser(tBu)-L-SerPsi(Me, Me)Pro-OH is a Amino Acid reagent (Subcategory: Pseudo AA) sold by WuXi TIDES. Offered in 100 g. Store at 4 °C. SDS available for reference.

Specifications
- CAS: 1000164-43-1
- MDL: MFCD11974988
- InChIKey: OXEDICXRSSILSN-GOTSBHOMSA-N
- Molecular Weight: 510.587
- Molecular Formula: C28H34N2O7
- Purity: ≥95%
- Container Type: 500 mL HDPE
- Pack Size: 100 g
- Net Weight: 100 g
- Gross Weight: 160.5 g
- Commodity Code: 29349990
- Country Of Origin: China
- IUPAC: (S)-3-(N-(((9H-fluoren-9-yl)methoxy)carbonyl)-O-(tert-butyl)-L-seryl)-2,2-dimethyloxazolidine-4-carboxylic acid
- SMILES: CC(OC[C@@H](C(N1[C@@H](COC1(C)C)C(O)=O)=O)NC(OCC2C3=CC=CC=C3C4=CC=CC=C42)=O)(C)C

Pricing & Availability

2,421

Medchemexpress LLC L-Serine-1,2,3-13C3 | 201595-68-8 | MFCD00144677 | 108.07 | 25 MG

L-Serine-13C3 is the 13C-labeled L-Serine, a non-essential amino acid that plays a central role in cellular proliferation. It is intended for research use only.

Can be used as a tracer.
Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
Purity: 99.77%.
Appearance: Solid.
Color: White to off-white.

Pricing & Availability

2,422

Medchemexpress LLC Fmoc-β-HoVal-OH | 172695-33-9 | 99.0% | 353.41 | 1 G

Fmoc-β-HoVal-OH is a valine derivative. Amino acids and their derivatives are used as ergogenic supplements that can influence the secretion of anabolic hormones, supply fuel during exercise, improve mental performance during stress-related tasks, and help prevent exercise-induced muscle damage. They are recognized for their beneficial properties as ergogenic dietary substances.

Valine derivative.
Influences secretion of anabolic hormones.
Provides fuel during exercise.
Enhances mental performance during stress-related tasks.
Prevents exercise-induced muscle damage.
Recognized as an ergogenic dietary substance.

Pricing & Availability

2,423

eMolecules 1272755-48-2 | Fmoc-D-Hse(Me)-OH | Ambeed | MFCD07366856 | 355.390 | C20H21NO5 | 98.000 | COCC[C@@H](NC(=O)OCC1c2ccccc2-c2ccccc12)C(O)=O | 250mg | 714081249

Fmoc-D-Hse(Me)-OH | Ambeed | 1272755-48-2 | MFCD07366856 | 355.390 | C20H21NO5 | 98.000 | COCC[C@@H](NC(=O)OCC1c2ccccc2-c2ccccc12)C(O)=O | 250mg | 714081249

Pricing & Availability

2,424

Medchemexpress LLC Fmoc-L-citrulline | 133174-15-9 | 397.42 | 25 G

Fmoc-L-Citrulline is an amino acid derivative featuring an Fmoc protecting group. It can be used to synthesize a degradable antibody-drug conjugate (ADC) linker, specifically forming a valine-citrulline (Val-Cit) motif. This linker connects an antibody to an ADC cytotoxin.

Amino acid derivative with Fmoc protecting group
Used for synthesis of degradable ADC linkers
Forms valine-citrulline (Val-Cit) motif
Stable in solid form: Store at room temperature for 3 years
Stable in solvent: -80°C for 2 years, -20°C for 1 year

Pricing & Availability

2,425

Medchemexpress LLC HO-PEG18-OH | 4445-03-8 | 98.0% | C36H74O19 | 25 MG

HO-PEG18-OH is a PEG-based PROTAC linker utilized in the synthesis of PROTACs. PROTACs are composed of two distinct ligands linked together; one ligand binds to an E3 ubiquitin ligase, and the other targets a specific protein. These molecules leverage the intracellular ubiquitin-proteasome system to achieve selective degradation of target proteins. In vitro, PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins.

Used in the synthesis of PROTACs
Composed of two distinct ligands linked together
Leverages the intracellular ubiquitin-proteasome system
Achieves selective degradation of target proteins

Pricing & Availability

2,426

STA Pharmaceutical Fmoc-L-N-Me-Ser(Bzl)-OH | 100 g | CAS 84000-14-6 | MDL MFCD00235880

Fmoc-L-N-Me-Ser(Bzl)-OH is a Amino Acid reagent (Subcategory: N-Me AA) sold by WuXi TIDES. Offered in 100 g. Store at 4 °C. SDS available for reference.

Specifications
- CAS: 84000-14-6
- MDL: MFCD00235880
- InChIKey: VZPIFUWXIJVTCS-DEOSSOPVSA-N
- Molecular Weight: 431.488
- Molecular Formula: C26H25NO5
- Purity: ≥95%
- Container Type: 500 mL HDPE
- Pack Size: 100 g
- Net Weight: 100 g
- Gross Weight: 160.5 g
- Commodity Code: 29242970
- Country Of Origin: China
- IUPAC: N-(((9H-fluoren-9-yl)methoxy)carbonyl)-O-benzyl-N-methyl-L-serine
- SMILES: CN(C(OCC1C2=CC=CC=C2C3=CC=CC=C31)=O)[C@H](C(O)=O)COCC4=CC=CC=C4

Pricing & Availability

2,427

STA Pharmaceutical Fmoc-D-Ser(AC)-OH | 50 g | CAS 608512-87-4 | MDL MFCD00077069

Fmoc-D-Ser(AC)-OH is a Amino Acid reagent (Subcategory: Ser) sold by WuXi TIDES. Offered in 50 g. Store at 4 °C. SDS available for reference.

Specifications
- CAS: 608512-87-4
- MDL: MFCD00077069
- InChIKey: HSGIKRPBGCJRDB-GOSISDBHSA-N
- Molecular Weight: 369.373
- Molecular Formula: C20H19NO6
- Purity: ≥95%
- Container Type: 250 mL HDPE
- Pack Size: 50 g
- Net Weight: 50 g
- Gross Weight: 89.8 g
- Commodity Code: 29242970
- Country Of Origin: China
- IUPAC: N-(((9H-fluoren-9-yl)methoxy)carbonyl)-O-acetyl-D-serine
- SMILES: CC(OC[C@H](C(O)=O)NC(OCC1C2=CC=CC=C2C3=CC=CC=C31)=O)=O

Pricing & Availability

2,428

STA Pharmaceutical Fmoc-L-Ser-OH.H2O | 25 g | CAS 1272755-68-6 | MDL MFCD04113634

Fmoc-L-Ser-OH.H2O is a Amino Acid reagent (Subcategory: Ser) sold by WuXi TIDES. Offered in 25 g. Store at 4 °C. SDS available for reference.

Specifications
- CAS: 1272755-68-6
- MDL: MFCD04113634
- InChIKey: RWWKTJDSARSZJL-NTISSMGPSA-N
- Molecular Weight: 345.351
- Molecular Formula: C18H19NO6
- Purity: ≥95%
- Container Type: 125 mL HDPE
- Pack Size: 25 g
- Net Weight: 25 g
- Gross Weight: 54.3 g
- Commodity Code: 29242970
- Country Of Origin: China
- IUPAC: (((9H-fluoren-9-yl)methoxy)carbonyl)-L-serine hydrate
- SMILES: OC[C@H](NC(OCC1C2=CC=CC=C2C3=CC=CC=C31)=O)C(O)=O.O

Pricing & Availability

2,429

Medchemexpress LLC Br-PEG8-OH | 1527515-88-3 | MFCD31656972 | ≥97.0% | 433.33 g·mol⁻¹ | C16H33BrO8 | 500 MG

Br-PEG8-OH is a brominated polyethylene glycol (PEG8) derivative with a terminal hydroxyl group, used as a reactive PEG linker in chemical synthesis and bioconjugation. The terminal bromine enables alkylation and coupling reactions to introduce PEG spacers or modify biomolecules. Supplied as a colorless to light yellow liquid with high purity for research use.

Terminal bromine enables alkylation and coupling reactions.
Eight ethylene glycol units provide a flexible, hydrophilic spacer.
Terminal hydroxyl allows further functionalization or conjugation.
High supplied purity ≥97.0% suitable for research applications.
Physical state liquid, recommended storage at -20°C for long-term stability.

Pricing & Availability

2,430

STA Pharmaceutical Fmoc-(S)-3-Amino-2-(tert-butoxymethyl)propanoic acid | 1 g | CAS 865152-44-9 | MDL MFCD17012675

Fmoc-(S)-3-Amino-2-(tert-butoxymethyl)propanoic acid is a Amino Acid reagent (Subcategory: Beta AA) sold by WuXi TIDES. Offered in 1 g. Store at 4 °C. SDS available for reference.

Specifications
- CAS: 865152-44-9
- MDL: MFCD17012675
- InChIKey: PGPAKWBBCOPCSF-HNNXBMFYSA-N
- Molecular Weight: 397.471
- Molecular Formula: C23H27NO5
- Purity: ≥95%
- Container Type: 15 mL HDPE
- Pack Size: 1 g
- Net Weight: 1 g
- Gross Weight: 7.8 g
- Commodity Code: 29242970
- Country Of Origin: China
- IUPAC: (S)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-(tert-butoxymethyl)propanoic acid
- SMILES: CC(OC[C@H](CNC(OCC1C2=CC=CC=C2C3=CC=CC=C31)=O)C(O)=O)(C)C

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Amino Acids

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Medchemexpress LLC Biotin-PEG4-OH | 1217609-84-1 | 98.0% | 50 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC Fmoc-Dha-OH | 261522-33-2 | MFCD09263343 | 99.6% | 309.32 g/mol | C18H15NO4 | 10 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC H-Ser(tBu)-OMe.HCl | 17114-97-5 | 99.2% | 211.69 | 500 G Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC L-Serine-1,2,3-13C3 | 201595-68-8 | MFCD00144677 | 108.07 | 25 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC Fmoc-β-HoVal-OH | 172695-33-9 | 99.0% | 353.41 | 1 G Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC Fmoc-L-citrulline | 133174-15-9 | 397.42 | 25 G Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC HO-PEG18-OH | 4445-03-8 | 98.0% | C36H74O19 | 25 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC Br-PEG8-OH | 1527515-88-3 | MFCD31656972 | ≥97.0% | 433.33 g·mol⁻¹ | C16H33BrO8 | 500 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More