https://pubchem.ncbi.nlm.nih.gov/compound/nicotinate

Nitrogen
Oxygen

Nitric Oxide
Niacin
Nicotinic Acid
Nicotinate
Nicotinamide
Nicotine

Carbon (C)
Hydrogen (H)
Oxygen (O)
Nitrogen (N)

Nicotine is an unusual alkaloid in that it has two nitrogen-containing heterocycles, pyridine and pyrrolidine. It is the tobacco component that makes smoking highly addictive,

tobacco products. (The methyl group on the alicyclic nitrogen of nicotine, in its biologically-active coenzyme forms, nicotinamide is attached through its heterocyclic nitrogen to the oxy-methylenegroup of a sugar residue)

Tryptophan is a precursor to the neurotransmitter serotonin, the hormone melatonin, and vitamin B3.

https://en.m.wikipedia.org/wiki/Indole

https://en.m.wikipedia.org/wiki/Carboxylic_acid

https://en.m.wikipedia.org/wiki/Carboxylate

https://en.m.wikipedia.org/wiki/Phenyl_group

https://en.m.wikipedia.org/wiki/Tryptophan

Tryptophan is an α-amino acid that is used in the biosynthesis of proteins. Tryptophan contains an α-amino group, an α-carboxylic acid group, and a side chain indole.

Carboxylic acid (R−COOH)
Carbon, Oxygen, Hydrogen & R=Phenyl.

The key elements of an amino acid are carbon (C), hydrogen (H), oxygen (O), and nitrogen (N), although other elements are found in the side chains of certain amino acids.

R-group, or phenyl ring, is a cyclic group of atoms with the formula C6H5.

..

CHON

(C) Carbon
(H) Hydrogen
(O) Oxygen
(N) Nitrogen

CHON
Cyanate
Fulminate
Nitrile

Nitrile Oxide
Nitric Oxide

Fulvic Acid
Fulminic Acid

https://en.m.wikipedia.org/wiki/CHON

https://en.m.wikipedia.org/wiki/Cyanate

https://en.m.wikipedia.org/wiki/Fulminate

https://en.m.wikipedia.org/wiki/Fulminic_acid

https://en.m.wikipedia.org/wiki/Isocyanic_acid

https://en.m.wikipedia.org/wiki/Nitrile

The simplest compounds to contain all of the CHON elements are fulminic acid and isocyanic acid (the latter of which is much more stable), having one of each atom.

Nitrile functional group is found in several drugs.

Structure of periciazine, an antipsychotic studied in the treatment of opiate dependence.

Structure of citalopram, an antidepressant drug of the selective serotonin reuptake inhibitor (SSRI) class.

Structure of cyamemazine, an antipsychotic drug.

Structure of fadrozole, an aromatase inhibitor for the treatment of breast cancer.

Structure of letrozole, an oral nonsteroidal aromatase inhibitor for the treatment of certain breast cancers.

https://comparewords.com/nitrile/nitrite

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cyanic acid
fulminic acid

https://en.m.wikipedia.org/wiki/Humic_substance

https://en.m.wikipedia.org/wiki/Fulvic_acid

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Phenol Pyrithione Nitrile

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L-arginine, an amino acid known to soften cancerous tumors, and histidine

Jimmy Keller is Another Victim in the War on Cancer Cures

https://www.naturalnews.com/029336_cancer_cures_chemotherapy.html

Cancer Is A Nitrogen Deficiency, Cancer Cell = Cell In Fermentation, Dr. Otto Warburg Was Right

https://raypeatforum.com/community/threads/cancer-is-a-nitrogen-deficiency-cancer-cell-cell-in-fermentation-dr-otto-warburg-was-right.24494/