chemistry

Solorinic acid

Solorinic acid is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Solorinic acid rather than just read about it. In short: Solorinic acid is an anthraquinone pigment found in the leafy lichen Solorina crocea. It is responsible for the strong orange colour of the medulla and the underside of the thallus in that species.

Key takeaways

Solorinic acid belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Solorinic acid to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Solorinic acid from memory before moving on to harder problems.

Reference excerpt

Solorinic acid is an anthraquinone pigment found in the leafy lichen Solorina crocea. It is responsible for the strong orange colour of the medulla and the underside of the thallus in that species. In its purified crystalline form, it exists as orange-red crystals with a melting point of 201 °C (394 °F). The structure of solorinic acid, 2-n-hexanoyl-1,3,8-trihydroxy-6-methoxy-anthraquinone, was proposed by Koller and Russ in 1937, and verified by chemical synthesis in 1966. Norsolorinic acid, (C20H18O7, 2-hexanoyl-1,3,6,8-tetrahydroxyanthraquinone), is a closely related compound also found in Solorina crocea. Solorinic acid was used as the internal standard in the establishment of a standardized method for the identification of lichen products using high-performance liquid chromatography. This is because it is quite a hydrophobic compound, and consequently will elute more slowly than most lichen products, making possible the identification of lichen extracts containing chlorinated xanthones or long chain depsides. Although usually associated with Solorina crocea, solorinic acid was reported as a lichen product from the crustose, rock-dwelling lichen Placolecis kunmingensis, described as a species new to science in 2019.

References

Illustrations

Worked examples

Example 1 — a first encounter with Solorinic acid

Start with the simplest possible case. Write down what Solorinic acid claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Solorinic acid before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Solorinic acid ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Solorinic acid

In research: Solorinic acid appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Solorinic acid in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Solorinic acid is common in secondary-school and first-year university syllabi. It links to neighbouring topics Anthraquinones, Lichen products, Polyketides, so understanding it makes those chapters shorter.
In everyday life: Look for Solorinic acid outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Solorinic acid” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Solorinic acid in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Solorinic acid means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Solorinic acid out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Solorinic acid in simple terms?

Solorinic acid is an anthraquinone pigment found in the leafy lichen Solorina crocea. It is responsible for the strong orange colour of the medulla and the underside of the thallus in that species.

Why does Solorinic acid matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Solorinic acid?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Solorinic acid.