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Items: 15

1.

STO 609 [Supplementary Concept]

structure in first source

Date introduced: June 29, 2002

2.

Naphthalimides

Compounds with three fused rings that appear like a naphthalene fused to piperidone or like a benz(de)isoquinoline-1,3-dione (not to be confused with BENZYLISOQUINOLINES which have a methyl separating the naphthyl from the benzyl rings). Members are CYTOTOXINS.

Year introduced: 2007

3.

Polycyclic Aromatic Hydrocarbons

Aromatic hydrocarbons that contain extended fused-ring structures.

Year introduced: 2017(1996)

4.

Polycyclic Compounds

Compounds which contain two or more rings in their structure.

Year introduced: 2005(1974)

5.

Piperidones

A family of saturated heterocyclic organic compounds which contain one nitrogen atom and a carbonyl group in the ring structure.

Year introduced: 1991(1971)

6.

Piperidines

A family of hexahydropyridines.

Year introduced: AZACYCLONOL was heading 1963-1984

7.

Organic Chemicals

A broad class of substances containing carbon and its derivatives. Many of these chemicals will frequently contain hydrogen with or without oxygen, nitrogen, sulfur, phosphorus, and other elements. They exist in either carbon chain or carbon ring form.

Year introduced: 1998

8.

Naphthalenes

Two-ring crystalline hydrocarbons isolated from coal tar. They are used as intermediates in chemical synthesis, as insect repellents, fungicides, lubricants, preservatives, and, formerly, as topical antiseptics.

9.

Isoquinolines

A group of compounds with the heterocyclic ring structure of benzo(c)pyridine. The ring structure is characteristic of the group of opium alkaloids such as papaverine. (From Stedman, 25th ed)

Year introduced: 1969

10.

Imides

Organic compounds containing two acyl groups bound to NITROGEN.

11.

Heterocyclic Compounds, 2-Ring

A class of heterocyclic compounds that include a two-ring fused structure. Both aromatic and non-aromatic ring structures are included in this category.

Year introduced: 1998

12.

Heterocyclic Compounds, 1-Ring

Organic compounds that contain a ring structure made up of carbon and one or more additional elements such as nitrogen and oxygen.

Year introduced: 1998

13.

Heterocyclic Compounds

Cyclic compounds that include atoms other than carbon in their ring structure.

14.

Benzimidazoles

Compounds with a BENZENE fused to IMIDAZOLES.

15.

Heterocyclic Compounds, Fused-Ring

Multiple ring heterocyclic compounds containing two or more rings that share two atoms and one bond in common.

Year introduced: 2017

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