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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2,131 – 2,145 of 35,795 results

2,131

Medchemexpress LLC L-glutamine | 56-85-9 | MFCD00008044 | 146.14 g/mol | C5H10N2O3 | 10 MG

L-Glutamine (Standard) is an analytical reference standard of L-glutamine (L-glutamic acid 5-amide) supplied as a solid for research and analytical applications. It is intended for qualitative and quantitative method development and validation and is commonly used in HPLC, GC, and MS workflows. Documentation such as SDS and COA/HNMR reports are available on request.

Analytical reference standard for method development and validation.
Suitable for qualitative and quantitative HPLC, GC, and MS analyses.
CAS number 56-85-9 for unambiguous identification.
Molecular formula C5H10N2O3; molecular weight 146.14 g/mol.
Provided in small reference pack sizes (for example, 10 MG) for laboratory use.
SDS and handling instructions available; COA or HNMR report available on request.

Pricing & Availability

2,132

Medchemexpress LLC L-glutamine-1,2-13C2 (L-glutamic acid 5-amide-1,2-13C2) | 56-85-9 | 98.0% | 148.13 | C5H10N2O3 (1,2-13C2) | 10 MG

L-Glutamine-1,2-13C2 is an isotopically labeled form of the amino acid L-glutamine supplied as a solid for research use in tracer studies, metabolic flux analysis, and mass spectrometry or NMR experiments.

Isotopically labeled at positions 1 and 2 with 13C for tracer experiments.
High purity suitable for analytical applications.
Supplied in a small, accurately measured quantity for precise dosing.
Suitable for mass spectrometry and NMR-based metabolic studies.
Solid form with defined molecular weight for stoichiometric calculations.

Pricing & Availability

2,133

Medchemexpress LLC L-Alanyl-L-glutamine | 39537-23-0 | MFCD00133046 | 95.0% | 217.22 g/mol | C8H15N3O4 | 1 ML

L-Alanyl-L-glutamine is a stable dipeptide of alanine and glutamine supplied as a 10 mM aqueous solution for research use. It provides a soluble, longer-lasting source of glutamine for cell culture and biochemical assays, and is reported to support antioxidant defenses, attenuate inflammation, and modulate heat shock protein responses in catabolic conditions.

Stable glutamine source for cell culture applications.
Ready-to-use 10 mM aqueous solution for convenience and reproducibility.
Supports antioxidant defenses and attenuates inflammatory responses.
May modulate heat shock protein (HSP) pathways in stressed cells.
Helps maintain mitochondrial metabolism and secretion coupling in β-cells.
High purity suitable for research and analytical use.

Pricing & Availability

2,134

eMolecules 80143-57-3 | Medchem Express | L-Glutamine-15N | 5mg | 721611324 | HY-N0390S | MFCD00084215 | 147.139 | C5H10N2O3

Medchem Express | L-Glutamine-15N | 5mg | 721611324 | HY-N0390S | 80143-57-3 | MFCD00084215 | 147.139 | C5H10N2O3

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2,135

STA Pharmaceutical Boc-L-Thr(Fmoc-L-Gln(Trt))-OH | 5 g | CAS 944283-36-7 | MDL MFCD18426606

Boc-L-Thr(Fmoc-L-Gln(Trt))-OH is a Amino Acid reagent (Subcategory: Pseudo AA) sold by WuXi TIDES. Offered in 5 g. Store at 4 °C. SDS available for reference.

Specifications
- CAS: 944283-36-7
- MDL: MFCD18426606
- InChIKey: AQVHAPHWFMHPJI-KYVGDJDASA-N
- Molecular Weight: 811.932
- Molecular Formula: C48H49N3O9
- Purity: ≥95%
- Container Type: 30 mL HDPE
- Pack Size: 5 g
- Net Weight: 5 g
- Gross Weight: 16.5 g
- Commodity Code: 29242970
- Country Of Origin: China
- IUPAC: O-(N2-(((9H-fluoren-9-yl)methoxy)carbonyl)-N5-trityl-L-glutaminyl)-N-(tert-butoxycarbonyl)-L-threonine
- SMILES: C[C@H]([C@@H](C(O)=O)NC(OC(C)(C)C)=O)OC([C@@H](NC(OCC1C2=CC=CC=C2C3=C1C=CC=C3)=O)CCC(NC(C4=CC=CC=C4)(C5=CC=CC=C5)C6=CC=CC=C6)=O)=O

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2,136

STA Pharmaceutical Fmoc-L-isoGln-OH | 100 g | CAS 288149-55-3 | MDL MFCD01861342

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

Specifications
- CAS: 288149-55-3
- MDL: MFCD01861342
- InChIKey: MZRFDZFXTSDMFA-KRWDZBQOSA-N
- Molecular Weight: 368.389
- Molecular Formula: C20H20N2O5
- 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: (S)-4-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-5-amino-5-oxopentanoic acid
- SMILES: O=C(CC[C@H](NC(OCC1C2=CC=CC=C2C3=CC=CC=C31)=O)C(N)=O)O

Pricing & Availability

2,137

Medchemexpress LLC N-acetyl-L-aspartic acid-d3 | 284665-15-2 | 99.8% | 178.16 | C6H6D3NO5 | 5 MG

Deuterium-labeled N-acetyl-L-aspartic acid (NAA-d3) is a stable isotope analytical standard used as a tracer or internal standard for quantitative analysis in NMR, GC-MS, and LC-MS. It is intended for research into brain metabolism and related neurodegenerative disorders and is supplied as a high-purity solid for analytical workflows.

Deuterium-labeled internal standard for quantitative analysis
High chemical and isotopic purity suitable for sensitive assays
White to off-white solid for convenient handling
Available in small milligram pack sizes for analytical use
Suitable as a tracer in studies of brain metabolism and disease

Pricing & Availability

2,138

Medchemexpress LLC Butanoic acid, 4-amino-3-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-4-oxo-, (3S)- | 200335-40-6 | MFCD00151920 | 98.5% | 354.36 | C19H18N2O5 | 100 MG

Fmoc-Asp-NH2 is a cleavable antibody-drug conjugate (ADC) linker consisting of an Fmoc-protected aspartic acid amide. Supplied as a white to off-white solid for research use only, it is used in linker assembly and conjugation steps during ADC and peptide synthesis.

Cleavable linker suitable for ADC synthesis.
Fmoc-protected aspartamide functionality for peptide and linker assembly.
High purity (typical 98.5%); individual batch COA may vary.
DMSO solubility: 250 mg/mL; ultrasonic treatment recommended for dissolution.
Storage: powder -20°C (3 years) or 4°C (2 years); in solvent -80°C (6 months) or -20°C (1 month).

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2,139

Apexbio Technology LLC Z-DEVD-FMK 210344-95-9 25mg

Z-DEVD-FMK (CAS 210344-95-9) is a tetrapeptide inhibitor primarily targeting caspase-3 a protease involved in apoptotic neuronal cell death Beyond caspase-3 inhibition Z-DEVD-FMK also directly suppresses calpain-mediated proteolysis notably reducing calpain-induced spectrin degradation In vitro studies confirm Z-DEVD-FMK attenuates necrotic neuronal death independently of caspase-3 activity In vivo following traumatic brain injury (TBI) or cerebral ischemia administration of Z-DEVD-FMK limits lesion size reduces tissue damage and improves functional neurological outcomes likely due to combined inhibition of caspase-3 and calpain pathways

Pricing & Availability

2,140

Medchemexpress LLC Fmoc-Asp(CSY)-OH | 2379679-90-8 | MFCD32857296 | 99.7% | 438.50 g/mol | C23H22N2O5S | 50 MG

Fmoc-Asp(CSY)-OH is an Fmoc-protected aspartic acid derivative bearing a cyanosulfurylide (CSY) carboxyl protecting group, designed for use in peptide synthesis and amino acid derivative research. Supplied as a solid for laboratory research use only.

Contains a cyanosulfurylide carboxyl protecting group.
Compatible with Fmoc-based solid-phase peptide synthesis workflows.
High purity suitable for analytical and synthetic applications.
Solid form, white to light yellow, stable when stored sealed at 4°C.
Soluble in DMSO; stock solutions stable at -80°C for months or -20°C for short-term storage.
Available in small pack sizes suitable for building block use in peptide assembly.

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2,141

STA Pharmaceutical Fmoc-D-Asp-Obn | 5 g | CAS 1932027-25-2 | InChIKey CBZSVHFNEMONDZ-HSZRJFAPSA-N

Fmoc-D-Asp-Obn is a Amino Acid reagent (Subcategory: Asp) sold by WuXi TIDES. Offered in 5 g. Store at 4 °C. SDS available for reference.

Specifications
- CAS: 1932027-25-2
- MDL: No data
- InChIKey: CBZSVHFNEMONDZ-HSZRJFAPSA-N
- Molecular Weight: 445.471
- Molecular Formula: C26H23NO6
- Purity: ≥95%
- Container Type: 30 mL HDPE
- Pack Size: 5 g
- Net Weight: 5 g
- Gross Weight: 16.5 g
- Commodity Code: 29242970
- Country Of Origin: China
- IUPAC: (R)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-(benzyloxy)-4-oxobutanoic acid
- SMILES: OC(C[C@H](C(OCC1=CC=CC=C1)=O)NC(OCC2C3=CC=CC=C3C4=C2C=CC=C4)=O)=O

Pricing & Availability

2,142

STA Pharmaceutical Boc-L-Ser(Fmoc-L-Asp(OtBu))-OH | 100 g | CAS 944283-16-3 | MDL MFCD14560598

Boc-L-Ser(Fmoc-L-Asp(OtBu))-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: 944283-16-3
- MDL: MFCD14560598
- InChIKey: VUJFELZNXRRVHV-ZEQRLZLVSA-N
- Molecular Weight: 598.649
- Molecular Formula: C31H38N2O10
- 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: O-((S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-(tert-butoxy)-4-oxobutanoyl)-N-(tert-butoxycarbonyl)-L-serine
- SMILES: CC(C)(OC(C[C@@H](C(OC[C@@H](C(O)=O)NC(OC(C)(C)C)=O)=O)NC(OCC1C2=C(C3=C1C=CC=C3)C=CC=C2)=O)=O)C

Pricing & Availability

2,143

Cambridge Isotope Laboratories L-ASPARTIC ACID (13C4, 99%), 0.5 G, 55443-54-4

L-ASPARTIC ACID (13C4, 99%), 0.5 G, 55443-54-4

Pricing & Availability

2,144

Medchemexpress LLC MMAF-OtBu (tert-butyl ester of monomethylauristatin F) | 745017-95-2 | 99.8% | 788.07 | C43H73N5O8 | 25 MG

MMAF-OtBu is a tert-butyl-protected derivative of monomethylauristatin F used as a cytotoxic payload building block for the synthesis of antibody-drug conjugates (ADCs). Supplied as a white to off-white solid, the compound is supplied in small milligram pack sizes and has defined storage conditions to maintain stability.

Tert-butyl-protected monomethylauristatin F derivative.
Used as a cytotoxic building block in ADC synthesis.
Chemical formula C43H73N5O8; molecular weight 788.07.
Purity 99.8%.
Solid, white to off-white; store at -20°C; in solvent: -80°C (6 months), -20°C (1 month).
Available in small milligram pack sizes for research and conjugation workflows.

Pricing & Availability

2,145

Medchemexpress LLC DL-aspartic acid | 617-45-8 | MFCD00063083 | 98.0% | 133.10 g/mol | C4H7NO4 | 25 G

DL-Aspartic acid is the racemic form of the amino acid aspartic acid provided as a research-grade biochemical reagent for analytical and life-science applications. It is used as an assay reagent, analytical standard, or building block in experiments that do not require enantiopure material.

Racemic amino acid suitable for biochemical assays and analytical applications.
CAS number 617-45-8; molecular formula C4H7NO4; molecular weight 133.10 g/mol.
Water solubility ~10 mg/mL with warming; limited solubility in DMSO.
Stable as a powder under refrigerated or frozen storage per supplier guidance.
Available in small analytical and gram-scale package sizes for laboratory use.

Pricing & Availability

Amino Acids

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Medchemexpress LLC L-glutamine | 56-85-9 | MFCD00008044 | 146.14 g/mol | C5H10N2O3 | 10 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC L-glutamine-1,2-13C2 (L-glutamic acid 5-amide-1,2-13C2) | 56-85-9 | 98.0% | 148.13 | C5H10N2O3 (1,2-13C2) | 10 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC L-Alanyl-L-glutamine | 39537-23-0 | MFCD00133046 | 95.0% | 217.22 g/mol | C8H15N3O4 | 1 ML Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC N-acetyl-L-aspartic acid-d3 | 284665-15-2 | 99.8% | 178.16 | C6H6D3NO5 | 5 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC Butanoic acid, 4-amino-3-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-4-oxo-, (3S)- | 200335-40-6 | MFCD00151920 | 98.5% | 354.36 | C19H18N2O5 | 100 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC Fmoc-Asp(CSY)-OH | 2379679-90-8 | MFCD32857296 | 99.7% | 438.50 g/mol | C23H22N2O5S | 50 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC MMAF-OtBu (tert-butyl ester of monomethylauristatin F) | 745017-95-2 | 99.8% | 788.07 | C43H73N5O8 | 25 MG Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Medchemexpress LLC DL-aspartic acid | 617-45-8 | MFCD00063083 | 98.0% | 133.10 g/mol | C4H7NO4 | 25 G Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More