Corwin Hansch
Encyclopedia
Corwin Herman Hansch was a Professor of Chemistry at Pomona College
Pomona College
Pomona College is a private, residential, liberal arts college in Claremont, California. Founded in 1887 in Pomona, California by a group of Congregationalists, the college moved to Claremont in 1889 to the site of a hotel, retaining its name. The school enrolls 1,548 students.The founding member...

 in California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

. He became known as the 'father of computer-assisted molecule design.'

Early Life and Childhood

He was born on October 6, 1918 in Kenmare
Kenmare, North Dakota
As of the census of 2000, there were 1,081 people, 468 households, and 278 families residing in the city. The population density was 872.8 people per square mile . There were 553 housing units at an average density of 446.5 per square mile...

, North Dakota
North Dakota
North Dakota is a state located in the Midwestern region of the United States of America, along the Canadian border. The state is bordered by Canada to the north, Minnesota to the east, South Dakota to the south and Montana to the west. North Dakota is the 19th-largest state by area in the U.S....

.

Education

He earned a B.S.
Bachelor of Science
A Bachelor of Science is an undergraduate academic degree awarded for completed courses that generally last three to five years .-Australia:In Australia, the BSc is a 3 year degree, offered from 1st year on...

 from the University of Illinois
University of Illinois at Urbana-Champaign
The University of Illinois at Urbana–Champaign is a large public research-intensive university in the state of Illinois, United States. It is the flagship campus of the University of Illinois system...

 in 1940 and a Ph.D.
Ph.D.
A Ph.D. is a Doctor of Philosophy, an academic degree.Ph.D. may also refer to:* Ph.D. , a 1980s British group*Piled Higher and Deeper, a web comic strip*PhD: Phantasy Degree, a Korean comic series* PhD Docbook renderer, an XML renderer...

 from New York University
New York University
New York University is a private, nonsectarian research university based in New York City. NYU's main campus is situated in the Greenwich Village section of Manhattan...

 in 1944.

Career

Hansch taught Organic Chemistry
Organic chemistry
Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, composition, reactions, and preparation of carbon-based compounds, hydrocarbons, and their derivatives...

 for many years at Pomona College
Pomona College
Pomona College is a private, residential, liberal arts college in Claremont, California. Founded in 1887 in Pomona, California by a group of Congregationalists, the college moved to Claremont in 1889 to the site of a hotel, retaining its name. The school enrolls 1,548 students.The founding member...

, and was known for giving complex lectures without using notes. His course in Physical Bio-Organic Medicinal Chemistry was ground-breaking at an undergraduate level.

Hansch may be best known as the father of the concept of quantitative structure-activity relationship
Quantitative structure-activity relationship
Quantitative structure–activity relationship or QSPR is the process by which chemical structure is quantitatively correlated with a well defined process, such as biological activity or chemical reactivity.For example, biological activity can be expressed quantitatively as the concentration of a...

 (QSAR), the quantitative correlation of the physicochemical properties of molecules with their biological activities.

He is also noted for the Hansch equation, which is used in
  • Multivariate Statistics - Multivariate statistics is a set of statistical tools to analyse data (e.g., chemical and biological) matrices using regression and/or pattern recognition techniques.

  • Hansch Analysis - Hansch analysis is the investigation of the quantitative relationship between the biological activity
    Biological activity
    In pharmacology, biological activity or pharmacological activity describes the beneficial or adverse effects of a drug on living matter. When a drug is a complex chemical mixture, this activity is exerted by the substance's active ingredient or pharmacophore but can be modified by the other...

     of a series of compounds and their physicochemical substituent or global parameters representing hydrophobic, electronic, steric and other effects using multiple regression correlation methodology.

  • Hansch-Fujita constant - The Hansch-Fujita constant describes the contribution of a substituent to the lipophilicity of a compound.


Research Interests:
Organic Chemistry
Organic chemistry
Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, composition, reactions, and preparation of carbon-based compounds, hydrocarbons, and their derivatives...

; Interaction of organic chemicals with living organisms, Quantitative Structure Activity Relationships (QSAR).
  • Fragment based regression analysis for quantitative structure-activity relationship
    Quantitative structure-activity relationship
    Quantitative structure–activity relationship or QSPR is the process by which chemical structure is quantitatively correlated with a well defined process, such as biological activity or chemical reactivity.For example, biological activity can be expressed quantitatively as the concentration of a...

     (Hansch-analysis)

Death

He died of pneumonia on May 8, 2011 in Claremont
Claremont, California
Claremont is a small affluent college town in eastern Los Angeles County, California, United States, about east of downtown Los Angeles at the base of the San Gabriel Mountains. The population as of the 2010 census is 34,926. Claremont is known for its seven higher-education institutions, its...

, California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

at 92.

External links

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