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Synthesis of DL-α-15N-tryptophan from 1-15N-hydantoin

Journal of Labelled Compounds and Radiopharmaceuticals, 1999
DL-α-15N-Tryptophan was prepared by the use of Al-Ni alloy as reducing agent from 1-15N-hydantoin and indole-3-aldehyde via three steps and 1-15N-hydantoin was prepared from15N-glycine. The yield of 1-15N-hydantoin based on 15N-glycine was 89.3% and the yield of DL-α-15N-tryptophan based on 1-15N-hydantoin was 84%, giving an over-all yield from 15N ...
Ganghua Tang +4 more
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15N chemical shift tensors and conformation of solid polypeptides containing 15N-labeled glycine residue by 15N NMR

Journal of Molecular Structure, 1998
Abstract The correlation between the isotropic 15 N chemical shift ( δ iso ) and 15 N chemical shift tensor components ( δ 11 , δ 22 and δ 33 ) and the main-chain conformation such as the polyglycine I (PGI: β-sheet), II (PGII: 3 1 -helix), α-helix and β-sheet forms of solid polypeptides [Gly∗,X] n consisting of 15 N-labeled glycine (Gly∗
Akira Shoji +5 more
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CROLOY 15-15N

Alloy Digest, 1957
Abstract CROLOY 15-15N is a super strength iron-base austenitic steel for high temperature application under extreme pressure conditions. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep.
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15N-15N-Kopplungskonstante und Rotationsbarriere von Nitrosaminen