L-aspartate(1−), CHEBI:29991; conjugate-base relation, formulaC4H6NO4, charge−1 and explicit structure. Ionic form and stereochemistry are specified, not generalized to every aspartate form.

Descriptor D007096, Scope Note: imidic-acid esters reacting with amines or amino acids to form amidines; protein modification and cross-linking.

Official definition A00267; DOI10.1351/goldbook.A00267. Broad oxoacid-derived nitrogen analogues and common organic-chemistry use for carboxamidines. Primary indexed definition verified despite direct403.

Originating ChEBI structure record CHEBI:17697; Definition, Formula, Net Charge and structural representation. Formulae in the article are qualified to the recorded neutral form; no dosage, clinical advice or prediction inferred.

Originating ChEBI structure record CHEBI:17621; Definition, Formula, Net Charge and structural representation. Formulae in the article are qualified to the recorded neutral form; no dosage, clinical advice or prediction inferred.

Originating ChEBI structure record CHEBI:17688; Definition, Formula, Net Charge and structural representation. Formulae in the article are qualified to the recorded neutral form; no dosage, clinical advice or prediction inferred.

Primary terminology record CHEBI:37614, definition and ontology: monovalent substituent derived from an alkene by removing hydrogen from any carbon; vinyl, allyl and prenyl examples. Formula CnH2n−1 applies to the acyclic one-double-bond parent convention.

Primary structural record www.ebi.ac.uk/chebi/CHEBI:26248

CHEBI:26248: formula C5H9, SMILES *CC=C(C)C, systematic name 3-methylbut-2-en-1-yl, and alkenyl-group classification. The leading asterisk is an attachment point, not another carbon atom. Distinguish this specific substituent from the broader family of prenyl groups.

By J. D. Kemp and K. S. Pitzer. Journal of the American Chemical Society 59(2), 276–279 (1 February 1937). DOI doi.org/10.1021/ja01281a014

Original publisher title, byline, date and page range verified. The article links ethane entropy and the third law with hindered methyl-group rotation; no numerical barrier, calorimeter specification or full-text result attributed here.

By W. C. Wiley and I. H. McLaren. Review of Scientific Instruments 26(12), 1150–1157 (December 1955). DOI: doi.org/10.1063/1.1715212

Original paper: masspec.scripps.edu/learn/ms/pdf/1955_WileyWC.pdf

Page 1150: ion source, evacuated drift tube and collector; later sections analyze initial-position/velocity broadening and two-field ion-gun focusing, then compare the analysis with recorded spectra.

CHEBI:18367, phosphate(3−), includes Orthophosphate among synonyms. Related primary database records www.ebi.ac.uk/chebi/CHEBI:43474 (hydrogenphosphate), www.ebi.ac.uk/chebi/CHEBI:39745 (dihydrogenphosphate), and www.ebi.ac.uk/chebi/CHEBI:35780 (phosphate ion) document formulas, charges and conjugate-acid/base relations.

Official Blue Book, peptide nomenclature: paragraph defining homodetic cyclic peptides (ring entirely of amino-acid residues linked by eupeptide bonds), followed by heterodetic cyclic peptides. Cite the cyclic-peptide paragraph rather than infer that all rings are head-to-tail.

Additional nomenclature locators: Section P-65.1.7.2.1 and Appendix 2, formyl terminology.

Mineralogical Magazine and Journal of the Mineralogical Society 36(283), 976–987 (September 1968). Publisher byline lists Lesley S. Dent Glasser and Ian B. Smith, Department of Chemistry, University of Aberdeen. Summary: complex orientation/symmetry changes; oxygen-framework interpretation where possible. Online digitization dated 2018 is not the original publication date.

CID 9543442, Description, ChEBI-contributed structural identity: cyclic peptide with eight amino acid residues and sulfur-containing bridge; naturally occurring mushroom toxin. No clinical advice or dose information used.

IUCr teaching pamphlet, sections 2–3: crystallographic symmetry operations, crystal classes and symmetry elements in periodic arrays; 32 point groups and 230 space groups.

By Xiaoge Liu, Junghyun Park, Ju-Hyung Kang, Hongtao Yuan, Yi Cui, Harold Hwang and Mark Brongersma. Applied Physics Letters 105, 181117 (2014). Figure 3: Hall measurements, carrier density, optical plasma frequency and mobility. Byline corroborated by Stanford SIMES: simes.stanford.edu/publications/quantum?page=21

Official NIH Office of Dietary Supplements fact sheet. Introduction: niacin chemical forms, nicotinamide, NAD and NADP; no clinical recommendations reproduced.

Nobel lecture, 8 December 2001. Primary account of discovery and mechanism development in asymmetric oxidation, including epoxidation and dihydroxylation.

Verified structural records: Cephalosporin C, CID65536; L-carnitine, CID10917; sodium tetraborate, CID10219853. Record locators and hydration/stereochemical conventions are specified where cited.

Verified EVA composition-conversion inputs: ethylene, CID 6325, pubchem.ncbi.nlm.nih.gov/compound/6325 , Molecular Formula C2H4 and Molecular Weight 28.05 g/mol; vinyl acetate, CID 7904, pubchem.ncbi.nlm.nih.gov/compound/7904 , Molecular Formula C4H6O2, connectivity CH3COOCH=CH2 and Molecular Weight 86.09 g/mol. The long-chain unit-mass conversion is derived in the ethylene-vinyl acetate article; these database records do not specify a copolymer feed-to-chain composition relation.