Paul Karrer's Birth Card: The King of Clubs

In the record

Paul Karrer (21 April 1889 – 18 June 1971) was a Swiss organic chemist best known for his research on vitamins. The birth-card coordinate for April 21 is the King of Clubs — a calendar position, not a forecast of the 1937 Chemistry prize.

Nobel Prize record

• 1937 The Nobel Prize in Chemistry — for his investigations on carotenoids, flavins and vitamins A and B2

The King of Clubs coordinate

Paul Karrer's birthday maps to the King of Clubs (The Master Leader). Card Blueprints treats that as a 365-day coordinate: solar value = 55 − (2 × month + day), and the year is unused. It is not a prediction about a Nobel Prize and not a verdict on Paul Karrer. The card's own language, quoted as system copy rather than biography: You make the intellectual call in the open and you can revise it.

Live King of Clubs meaning page

Paul Karrer in the public record

He and British chemist Norman Haworth won the Nobel Prize for Chemistry in 1937. Karrer was born in Moscow, Russia to Paul Karrer and Julie Lerch, both Swiss nationals. In 1892 Karrer's family returned to Switzerland where he was educated at Wildegg and at the Old Cantonal School Aarau where he matriculated in 1908. He studied chemistry at the University of Zurich under Alfred Werner and after gaining his PhD in 1911, he spent a further year as an assistant in the Chemical Institute. He then took a post as a chemist with Paul Ehrlich at the Georg Speyer Haus, Frankfurt-am-Main. In 1919 he became Professor of Chemistry and Director of the Chemical Institute. Karrer's early research concerned complex metal compounds but his most important work has concerned plant pigments, particularly the yellow carotenoids. He elucidated their chemical structure and showed that some of these substances are transformed in the body into vitamin A.

Summarised from the lead section of the Wikipedia article Paul Karrer (CC BY-SA 4.0). No biographical facts were written for this page beyond that article.

Where the record meets the King of Clubs

A card is a calendar coordinate, not a cause. What follows sets one line of the card's own published language beside one sentence of the sourced record, paired by a documented rule. It is a resemblance offered for the reader to weigh — not a claim about Paul Karrer, and not a forecast of a Nobel Prize.

Clear thinking and decisive action

Paul Karrer (21 April 1889 – 18 June 1971) was a Swiss organic chemist best known for his research on vitamins.

Paired on the mind and communication — the domain ♣ governs in this system. Markers in the record: research.

Also on the record

1. His work led to the establishment of the correct constitutional formula for β-carotene, the chief precursor of vitamin A; the first time that the structure of a vitamin or provitamin had been established.
2. George Wald worked briefly in Karrer's lab while studying the role of vitamin A in the retina.
3. Later, Karrer confirmed the structure of ascorbic acid (vitamin C) and extended his researches into the vitamin B2 and E.
4. His important contributions to the chemistry of the flavins led to the identification of lactoflavin as part of the complex originally thought to be vitamin B2.

Other laureates with this card

• A. Michael Spence — 2001 Economic Sciences
• Albert Camus — 1957 Literature
• Barry C. Barish — 2017 Physics
• Bertram N. Brockhouse — 1994 Physics
• Bruce Merrifield — 1984 Chemistry
• Carl Cori — 1947 Physiology or Medicine
• Cecil Powell — 1950 Physics
• Daniel Bovet — 1957 Physiology or Medicine
• Emil Fischer — 1902 Chemistry
• Eric Kandel — 2000 Physiology or Medicine
• François Jacob — 1965 Physiology or Medicine
• Frederick Sanger — 1958 Chemistry; 1980 Chemistry
• 28 more laureates share this card.

FAQ

What is Paul Karrer's birth card?

The King of Clubs. April 21 maps to that card through the public Card Blueprints formula. The year of birth is not used.

Does a birth card predict a Nobel Prize?

No. These pages are coordinates, not fortune-telling. A birth card names a calendar day in a 52-card year. It does not forecast prizes, character, or fate.

Where do Paul Karrer's dates come from?

Birth date 1889-04-21 is the Nobel Prize API v2.1 day-precision date, verified against Wikidata P569 (CC0, day precision, Gregorian preferred). The two sources match. Year-only Nobel dates and Nobel↔Wikidata conflicts are dropped, not guessed. Page hooks and evidence come from the Wikipedia REST summary (CC BY-SA 4.0).

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