quinine
Enable an agent to identify quinine, assess the form and quality of a material containing it, and determine which handling or use decisions require further evidence.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an agent to identify quinine, assess the form and quality of a material containing it, and determine which handling or use decisions require further evidence.
Quinine is a naturally occurring, bitter-tasting cinchona alkaloid with molecular formula C20H24N2O2, historically obtained from Cinchona bark and used for its antimalarial activity.
It can be Compare identity evidence against a quinine reference and flag unresolved stereochemistry.; Reconcile quinine quantities across salt and free-base-equivalent reporting when composition is established.; Assess a batch against the specification required for its declared use.; Select identity and impurity checks that distinguish quinine from related alkaloids.; Flag material for quarantine or retesting when traceability, storage history, or analytical evidence is inadequate.; Identify which handling and use decisions need a current authoritative source or qualified review..
Distinguishing features
Require evidence consistent with quinine's molecular formula, C20H24N2O2, while recognising that formula alone cannot establish identity.
Distinguish quinine from quinidine through stereochemical identification or a validated analytical method capable of separating them.
Distinguish quinine from cinchonine, cinchonidine, and other related alkaloids using selective analytical evidence rather than botanical origin or bitterness.
Identify whether a material is quinine free base, a specified quinine salt, or a mixture containing quinine; a label saying only 'quinine' leaves this unresolved.
Treat fluorescence as supporting evidence whose interpretation depends on conditions, rather than as a unique identity test.
Scope
+ Quinine molecular identity and stereochemical boundaries
+ Free-base, salt, hydration, and physical-form distinctions
+ Quinine content, analytical identity, purity, and related alkaloids
+ Material origin, processing history, and storage condition
+ Evidence supporting a declared use and constraints arising from quinine
- Cinchona species, cultivation, and bark as biological materials
- Quinidine as a distinct chemical substance
- Finished antimalarial medicines and their complete formulations
- Tonic water and other finished food or beverage products
- Malaria diagnosis, patient-specific prescribing, and dosing
- Manufacturing equipment and complete extraction-process models
Characteristics
- Chemical identity
- Quinine identity established, provisional, or unverified; structure and stereochemistry reference Separates quinine from related alkaloids and incorrectly labelled materials.
- Chemical form
- Free base or named salt, with counterion, stoichiometry, and hydration or solvation state Determines how mass, composition, and physical properties should be interpreted.
- Quinine content
- Mass fraction %, mg/g, mg/mL, or mol/L; specify salt or free-base-equivalent basis and dry or as-received basis Prevents comparisons or conversions between incompatible reporting bases.
- Related alkaloid profile
- Named alkaloids in mass %, mg/g, or other method-defined units, with detection and quantification limits Shows whether related substances undermine identity, purity, or suitability.
- Water content
- Mass %, with method and distinction between hydration water and other moisture where established Supports interpretation of assay results and material form.
- Dissolution conditions
- Solubility in g/L or mol/L, with solvent, temperature, pH, and chemical form Makes dissolution behaviour interpretable for a particular preparation.
- Optical rotation
- Observed rotation in degrees or specific rotation under a stated convention, with solvent, concentration, temperature, and wavelength Provides condition-dependent evidence relevant to stereochemical identity.
- Source and batch lineage
- Links to producer, supplier, production route, batch, and supporting records Connects material claims to traceable evidence.
- Quality disposition
- Unassessed, quarantined, accepted for a named use, rejected, or awaiting retest Keeps suitability specific to the evidence and intended use.
- Declared use
- Pharmaceutical ingredient, analytical reference material, research reagent, food or beverage ingredient, or other specified use Determines which specifications and permissions must be checked.
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.quinine
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 6 bundles · 11 layers · 19 findings · 30 questions.
Quinine identity Establish what counts as quinine and distinguish neighbouring chemical identities.
Related alkaloids and ambiguous product names can make apparent identity unreliable.
Molecular and stereochemical identity
Connect the material designation to a defined quinine structure.
Quinine versus related alkaloids
Identity assessment must resolve stereochemistry and related alkaloids rather than rely on formula or common name alone.
- Which structural reference defines quinine, including its stereochemistry? definition
- What evidence distinguishes this material from quinidine and other Cinchona alkaloids? measurement
Substance and product boundary
Separate the quinine substance from its chemical forms and containing products.
Base, salt, or containing mixture
A quinine designation needs an explicit form and a distinction between substance identity and mixture composition.
- Does this record describe quinine free base, a specified salt, or quinine within a mixture? boundary
- Which counterion, stoichiometry, and hydration state support the declared chemical form? definition
Form and quantification Make quinine measurements comparable across material forms and analytical conditions.
Salt composition, moisture, and solution conditions affect how quinine quantities and properties are interpreted.
Content reporting basis
Resolve what a reported quinine quantity actually measures.
Quinine-equivalent accounting
Content values require an explicit chemical and moisture basis before comparison or conversion.
- Is the assay expressed as quinine free-base equivalent or as the mass of a specified salt? measurement
- What stoichiometry, water content, and reporting basis justify any conversion? measurement
Condition-dependent properties
Associate physical and optical observations with the conditions under which they were obtained.
Interpretable solution and optical behaviour
Solubility, fluorescence, and optical rotation need stated conditions and a defined quinine form.
- For which quinine form, solvent, pH, and temperature was the reported solubility established? measurement
- Which measurement conditions and reference comparison support interpretation of fluorescence or optical rotation? measurement
Analytical quality Assess whether identity, content, and impurity evidence support the material's declared quality.
A quinine assay alone does not resolve related alkaloids, contaminants, or fitness for a particular use.
Identity and assay evidence
Evaluate the selectivity and traceability of quinine measurements.
Selective quinine measurement
Analytical evidence should establish what the method measures and which confounding substances it resolves.
- Does the method distinguish quinine from quinidine and other plausible related alkaloids in this matrix? measurement
- Which reference material, method version, and laboratory record support the identity and assay results? provenance
Impurities and acceptance
Relate the measured impurity profile to a named specification.
Use-specific quality decision
Acceptance depends on applicable impurity limits and adequate evidence for the intended grade.
- Which related alkaloids, residual solvents, and other impurities were assessed, and with what quantification limits? measurement
- Which specification and version govern acceptance of this quinine batch for its declared use? action
Origin and material condition Connect quinine material to its production history and evidence of continued suitability.
Origin and processing guide impurity investigation, while storage history affects confidence in current batch evidence.
Production lineage
Record evidence for quinine sourcing and purification without modelling the whole production system.
Documented quinine origin
Botanical extraction or another declared production route requires traceable support rather than inference from the substance name.
- What records establish the production route and connect the supplied material to its producer and batch? provenance
- Where botanical extraction is claimed, what source and purification evidence informs the expected related-alkaloid profile? provenance
Storage and retest status
Assess whether current material condition remains supported by batch-specific evidence.
Continued batch suitability
Storage requirements and retest decisions should follow evidence for the actual quinine form and packaging.
- What storage, packaging, and stability evidence applies to this quinine form and batch? provenance
- Do exposure history, package damage, or observed changes require quarantine or retesting under the applicable procedure? action
Use and handling constraints Connect intended applications to appropriate evidence and handling controls.
Quinine's use in medicines, laboratory work, and beverages does not establish interchangeability of grades or unrestricted suitability.
Declared application
Keep suitability tied to a particular application, jurisdiction, and material grade.
Application-specific authority
A proposed use needs its own specification and authoritative basis; another quinine application cannot supply that approval.
- Is the quinine intended for pharmaceutical manufacture, analytical work, research, or food and beverage production? definition
- Which current requirements establish whether this chemical form, grade, and concentration are permitted for that use? action
Exposure and decision boundaries
Identify handling evidence and distinguish substance assessment from clinical decisions.
Form-specific handling and escalation
Handling decisions require documentation for the supplied material; patient-specific use belongs to clinical assessment.
- Which current safety documentation covers the actual quinine form, concentration, and foreseeable exposure routes? provenance
- What handling, spill, and disposal actions does that documentation require for the proposed operation? action
- Which proposed decisions concern a patient or finished medicine and therefore require a linked clinical or medicinal-product model? boundary
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- This entry covers the chemical substance; the listed pharmaceutical forms are salts of that substance, not separate stereochemical varieties.
- Salt identity, hydration state and concentration basis must be specified when comparing analytical or pharmaceutical quantities.
- Current treatment recommendations, pharmacopoeial editions and jurisdiction-specific food limits require verification; no sources were consulted for this recall.
- Which of these check these first hold for the sense of quinine this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Quinine free base
- Quinine sulfate
- Quinine hydrochloride
- Quinine dihydrochloride
- Which of these kinds and varieties hold for the sense of quinine this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- CAS Registry Number - 130-95-0 - Identifies quinine free base; salts and hydrates have separate identifiers.
- ATC - P01BC01 - WHO classification code for quinine as an antimalarial.
- Which of these identifiers and schemes hold for the sense of quinine this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- United States Pharmacopeia-National Formulary, issued by USP, includes quality requirements for quinine sulfate.
- Food-use permissions and concentration limits are set by the relevant national or regional food regulator.
- Which of these standards and regulation hold for the sense of quinine this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Treatment of malaria in selected clinical circumstances.
- Bitter flavouring in tonic water and other beverages where permitted.
- Quinine sulfate solutions serve as fluorescence reference materials in analytical chemistry.
- Which of these real-world use hold for the sense of quinine this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Molar mass of quinine free base - 324.42 - g/mol
- Which of these typical measurements hold for the sense of quinine this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Cinchonism can include tinnitus, headache, nausea, dizziness and visual disturbances.
- Can cause severe immune-mediated thrombocytopenia and other serious blood disorders.
- Can prolong the QT interval and contribute to dangerous cardiac arrhythmias.
- Can cause hypoglycaemia.
- Confusing free-base mass with salt or hydrate mass can produce dosing or formulation errors.
- Which of these failure modes and hazards hold for the sense of quinine this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Medicinal availability, approved indications and place in malaria treatment protocols differ between jurisdictions.
- Permitted beverage concentrations and labelling requirements differ between jurisdictions.
- Which of these regional variation hold for the sense of quinine this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Quinidine - A stereoisomer of quinine with different stereochemistry and a distinct pharmacological profile, particularly its use as an antiarrhythmic.
- Cinchona bark - A botanical material containing quinine alongside other constituents; quinine is an individual chemical compound.
- Chloroquine - A structurally distinct synthetic antimalarial, rather than the naturally occurring cinchona alkaloid.
- Tonic water - A formulated beverage containing a small quantity of quinine, rather than quinine itself.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of quinine this model covers, and on what evidence? provenance
What the second pass must settle
- Does the registry already link quinine to a world model that should remain the single source of truth?
- Which authoritative structural and analytical references should establish quinine identity and its distinction from quinidine?
- Which quinine salts and hydration states need explicit representation within this entry, and which already have separate registry entries?
- Which current pharmacopoeial, reference-material, and food-use specifications apply to the intended jurisdictions and grades?
- What form-specific stability and impurity evidence is available to support storage, retesting, and acceptance decisions?