The lowercase r-s notation describes relative and absolute configurations of stereocenters

the verdict

SUPPORTED

the evidence backs this

Recorded sources

2 sources for · 0 against

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The lowercase r and s stereochemical descriptors are standardly used in chemical nomenclature to denote relative and absolute configurations of stereocenters.

The analysis

The retrieved literature, specifically papers discussing chemical nomenclature and stereochemical annotations like MAP4C fingerprints and chiral tramadol derivatives, utilizes the lowercase r-s notation to designate stereocenter configurations alongside capital R-S.

Evidence for · 2

One chiral fingerprint to find them all.

Recorded source metadata

Orsi M, Reymond JL. One chiral fingerprint to find them all.. 2024. https://doi.org/10.1186/s13321-024-00849-6

The study discusses the use of CIP annotations including lowercase r and s descriptors for stereocenters within molecular fingerprints.

Source citation format

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More for · 1

Chiral Switches of Tramadol Hydrochloride, a Potential Psychedelic Drug-Past and Future.

Recorded source metadata

Agranat I, D'Acquarica I. Chiral Switches of Tramadol Hydrochloride, a Potential Psychedelic Drug-Past and Future.. 2024. https://doi.org/10.1021/acsmedchemlett.4c00322

The paper uses lowercase r and s descriptors to denote specific relative and absolute configurations in racemic mixtures such as tramadol.

Source citation format

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first checked01 Aug 2026

judged → SUPPORTED · 8401 Aug 2026

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