L-Carnosine

• CAS: 305-84-0
• Catalog Number: ACM305840
• Category: Main Products
• Molecular Weight: 226.23
• Molecular Formula: C9H14N4O3
• Synonyms: β-Alanyl-L-histidine
• IUPAC Name: (2S)-2-(3-Aminopropanoylamino)-3-(1H-imidazol-5-yl)propanoic acid
• SMILES: C1=C(NC=N1)CC(C(=O)O)NC(=O)CCN
• InChI: InChI=1S/C9H14N4O3/c10-2-1-8(14)13-7(9(15)16)3-6-4-11-5-12-6/h4-5,7H,1-3,10H2,(H,11,12)(H,13,14)(H,15,16)/t7-/m0/s1
• InChI Key: CQOVPNPJLQNMDC-ZETCQYMHSA-N
• Boiling Point: 367.84 °C
• Melting Point: 253 °C(lit.)
• Flash Point: 350.7ºC
• Density: 1.2673 g/cm³
• Appearance: Solid
• Storage: -20 °C
• Complexity: 259
• Exact Mass: 226.10659032
• Hazard Statements: Xn: Harmful
• Isomeric SMILES: C1=C(NC=N1)C[C@@H](C(=O)O)NC(=O)CCN
• Monoisotopic Mass: 226.10659032
• pKa: 2.62(at 25 °C)
• Safety Description: S24/25
• Stability: Stable, but may be heat sensitive - store cold. Incompatible with strong oxidizing agents.
• Topological Polar Surface Area: 121 Ų
• WGK Germany: 2

Synthetic Use

Upstream Synthesis Route 1

• 3303-84-2

• 305-84-0

Reference: [1] Journal of the Brazilian Chemical Society, 2016, vol. 27, # 10, p. 1814 - 1819

Upstream Synthesis Route 2

• 64017-81-8
• 7389-87-9

• 2140-53-6
• 1246364-63-5
• 1246364-64-6
• 305-84-0

Reference: [1] Advanced Synthesis and Catalysis, 2010, vol. 352, # 2-3, p. 407 - 415

Upstream Synthesis Route 3

• 64017-81-8
• 71-00-1

• 305-84-0

Reference: [1] Advanced Synthesis and Catalysis, 2010, vol. 352, # 2-3, p. 407 - 415

Downstream Synthesis Route 1

• 305-84-0

• 125347-29-7

Reference: [1]Bulletin de la Societe Chimique de France,1989,p. 88 - 94

Downstream Synthesis Route 2

• 305-84-0

• 68808-73-1
• 39740-49-3

Reference: [1]Chemical and Pharmaceutical Bulletin,1983,vol. 31,p. 3302 - 3305

* For details of the synthesis route, please refer to the original source to ensure accuracy.