dauricine

Reference structure match

Record the reference structure and evidence that a candidate has the required connectivity and stereochemistry.

1. Which authoritative structure record defines dauricine for this entry, including its stereocentres? definition
2. Which analytical evidence distinguishes the candidate from daurisoline and other plausible related alkaloids? measurement

Form and identifier alignment

Associate identifiers and mass calculations with the actual material form.

1. Does the supplied material contain dauricine free base, an identified salt or an unresolved mixture? boundary
2. Which CAS, PubChem and EC mappings have been verified for that exact form, and which remain unresolved? provenance

Lot identity evidence

Retain the evidence supporting identification without treating plant provenance as chemical proof.

1. Was this lot isolated, synthesised or purchased, and what traceable record links it to the material being assessed? provenance
2. Which combination of reference comparison, chromatography, mass spectrometry, NMR or stereochemical analysis supports its identity? measurement

Usable content

Determine the amount of dauricine available and whether impurities compromise a proposed experiment.

1. Is the stated purity a calibrated content assay or chromatographic area percentage, and what uncertainty and reporting basis apply? measurement
2. Do related alkaloids, residual solvents, water or unidentified peaks require additional testing or rejection for the intended use? action

Condition-dependent properties

Record observed properties without inventing universal constants from unspecified supplier values.

1. What phase, water or solvent content and thermal transitions are measured for the identified dauricine form? measurement
2. Does a reported melting or boiling value describe a measured transition, decomposition or a prediction? provenance

Verified exposure solution

Connect nominal concentration to measured dissolved material and its stability window.

1. At the intended solvent composition, pH and temperature, what dauricine concentration remains dissolved after dilution? measurement
2. What evidence determines acceptable storage duration, light exposure and freeze-thaw history before reanalysis is needed? action

Endpoint-specific evidence

Require explicit evidence before assigning a molecular target, functional effect or therapeutic interpretation.

1. Which endpoint was measured, in which biological system, at what verified concentration or dose and duration? measurement
2. Do the controls distinguish the proposed activity from vehicle effects, precipitation, assay interference and general cytotoxicity? boundary

Parent-metabolite separation

Research in human liver microsomes and rat bile investigated quinone methide metabolites; record the experimental context and distinguish detected conjugates from inferred transient intermediates. [Primary study](https://pubmed.ncbi.nlm.nih.gov/19358519/)

1. Which metabolites, trapping products or adducts were directly detected, and which intermediates were inferred? measurement
2. What evidence links the transformation pathway to the biological system and exposure conditions proposed for this sample? boundary

Pulmonary toxicity signal

A primary study examined pulmonary toxicity and metabolic activation in CD-1 mice; this is an experimental hazard signal, not a quantified human exposure limit. [Primary study](https://pubmed.ncbi.nlm.nih.gov/20008063/)

1. What dose, route, duration and lung-injury endpoints underlie the reported toxicity? measurement
2. Which conclusions apply to the proposed handling or experimental exposure, and which require unsupported extrapolation? boundary

Documented use decision

Base handling and use decisions on current, attributable documents and explicitly record missing limits or classifications.

1. Which current SDS, GHS classification and jurisdiction-specific restrictions apply to this dauricine form and concentration? provenance
2. What containment, storage and disposal requirements follow from those records, and does an unresolved requirement prevent the proposed use? action

Check these first

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these check these first hold for the sense of dauricine this model covers, and on what evidence? provenance

Identifiers and schemes

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these identifiers and schemes hold for the sense of dauricine this model covers, and on what evidence? provenance

Real-world use

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these real-world use hold for the sense of dauricine this model covers, and on what evidence? provenance

Typical measurements

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these typical measurements hold for the sense of dauricine 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.

1. Which of these failure modes and hazards hold for the sense of dauricine 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.

1. Which of these neighbouring kinds and how to tell them apart hold for the sense of dauricine this model covers, and on what evidence? provenance