Seleno-L-cystine - ≥95% , CAS No.29621-88-3

CAS: 29621-88-3 Cat. No.: S169355 Molecular Weight: 334.09 Beilstein Registry Number: 1969560 EC Number: 608-382-6 PubChem CID: 207306

GRADE & PURITY ≥95%

Synonyms

261B157KR8 | L-Selenocystine monohydrate | L-3,3'-Diselenodialanine | L-Selenocystine | (R,R)-3,3'-Diselenobis(2-aminopropionic Acid) | 3,3'-Diselenobis[L-alanine] | (2R,2'R)-3,3'-diselanediylbis(2-aminopropanoic acid)

Storage

Store at 2-8°C

Shipped In

Wet ice

Overview

Seleno-L-cystine can be used for the synthesis of:
• Biologically active selenol compounds.
• Non-natural selenylated diamino acids

Specifications

Synonyms

261B157KR8 | L-Selenocystine monohydrate | L-3, 3'-Diselenodialanine | L-Selenocystine | (R, R)-3, 3'-Diselenobis(2-aminopropionic Acid) | 3, 3'-Diselenobis[L-alanine] | (2R, 2'R)-3, 3'-diselanediylbis(2-aminopropanoic acid)

Specifications & Purity

≥95%

Storage

Store at 2-8°C

Shipped In

Wet ice

This product requires cold chain shipping. Ground and other economy services are not available.

Purity

≥95%

Names and Identifiers

• Canonical Smiles: C(C(C(=O)O)N)[Se][Se]CC(C(=O)O)N
• IUPAC Name: (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]diselanyl]propanoic acid
• InChIKey: JULROCUWKLNBSN-IMJSIDKUSA-N
• INCHI: 1S/C6H12N2O4Se2/c7-3(5(9)10)1-13-14-2-4(8)6(11)12/h3-4H,1-2,7-8H2,(H,9,10)(H,11,12)/t3-,4-/m0/s1
• Isomeric SMILES: C([C@@H](C(=O)O)N)[Se][Se]C[C@@H](C(=O)O)N
• WGK Germany: 3
• RTECS: AY6032000
• PubChem CID: 207306
• Molecular Weight: 334.09
• Beilstein: 1969560

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Organic acids and derivatives
    • Class Carboxylic acids and derivatives
      • Subclass Amino acids, peptides, and analogues
        • Level5 Amino acids and derivatives
          • Level6 Alpha amino acids and derivatives
            • Level7 Alpha amino acids
              • Level8 L-alpha-amino acids

• Kingdom: Organic compounds
• Superclass: Organic acids and derivatives
• Class: Carboxylic acids and derivatives
• Subclass: Amino acids, peptides, and analogues
• Intermediate Tree Nodes: Amino acids and derivatives - Alpha amino acids and derivatives - Alpha amino acids
• Direct Parent: L-alpha-amino acids
• Alternative Parents: Dicarboxylic acids and derivatives Diselenides Amino acids Carboxylic acids Organopnictogen compounds Organic oxides Monoalkylamines Hydrocarbon derivatives Carbonyl compounds
• Molecular Framework: Aliphatic acyclic compounds
• Substituents: L-alpha-amino acid - Dicarboxylic acid or derivatives - Diselenide group - Amino acid - Carboxylic acid - Amine - Hydrocarbon derivative - Organic oxygen compound - Primary amine - Organoselenium compound - Organooxygen compound - Organonitrogen compound - Primary aliphatic amine - Organic nitrogen compound - Carbonyl group - Organic oxide - Organopnictogen compound - Aliphatic acyclic compound
• Description: This compound belongs to the class of organic compounds known as l-alpha-amino acids. These are alpha amino acids which have the L-configuration of the alpha-carbon atom.
• External Descriptors: Not available

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Sensitivity: Heat sensitive
• Specific Rotation[α]: [α]20/D −28°, c = 1 in NaOH
• Melt Point(°C): 224.5-229.5 °C (lit.)
• Molecular Weight: 334.110 g/mol
• Hydrogen Bond Donor Count: 4
• Hydrogen Bond Acceptor Count: 6
• Rotatable Bond Count: 7
• Exact Mass: 335.913 Da
• Monoisotopic Mass: 335.913 Da
• Topological Polar Surface Area: 127.000 Ų
• Heavy Atom Count: 14
• Formal Charge: 0
• Complexity: 192.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 2
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 1

XLogP3

References

1. Jianming Zhao, Ziyuan Fang, Bingxuan Wang, Jinming Li, Abudureheman Bahatibieke, Haoye Meng, Yajie Xie, Jiang Peng, Yudong Zheng.  (2024)  Dual cross-linked polyurethane-alginate biomimetic hydrogel for elastic gradient simulation in osteochondral structures: Microenvironment modulation and tissue regeneration.  INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES,      [PMID:39378917] [10.1016/j.ijbiomac.2024.136215]

2. Xiao-Xia Zhou, Quanzhi Xiao, Kena Zhang, Yan Gao, Jie Zhang, Liping Fang, Bing Yan, Fangbai Li.  (2024)  Quantitatively Tracking the Speciation and Dynamics of Selenium Nanoparticles in Rice Plants.  ANALYTICAL CHEMISTRY,      [PMID:39361821] [10.1021/acs.analchem.4c04032]

3. Deng Ruotong, Chen Wei, Zhu Hanjie, Li Yuxi, Ou Yining, Wang Jian, Ruan Qing, Zhang Xuanying, Zhang Junbo, Zhang Yongxian, Niu Yantao, Hu Zhubin, Zhang Chunlei, Xu Huaping, Cao Wei.  (2025)  Molecular engineering of melanin for enhanced biological γ-ray protection.  Nature Communications,  16  (1): (1-17).  [PMID:40849435] [10.1038/s41467-025-62403-8]

4. Wenjing Wang, Guihong Lu, Peilin Guo, Haochong Zhang, Yan Wang, Diwei Zheng, Chengliang Lyu, Dongfang Wang, Shang Li, Feng Li, Jiawei Zhao, Meng Qin, Weiping Li, Hui Tan, Guanghui Ma, Wei Wei.  (2025)  Selenized neural stem cell-derived exosomes: A neotype therapeutic agent for traumatic injuries of the central nervous system.  Cell Reports Medicine,      [PMID:40882623] [10.1016/j.xcrm.2025.102319]