History of Mildred Rebstock in Timeline

By Popular Timelines Editorial Team · Updated: July 16, 2026

Mildred Rebstock (1919–2011) was a distinguished American pharmaceutical chemist whose work significantly advanced modern medicine. She is best known for her landmark achievement in 1947: the successful chemical synthesis of chloramphenicol. This breakthrough marked the first time a broad-spectrum antibiotic was produced entirely in a laboratory rather than being derived from natural organisms, making it more accessible and affordable for widespread medical use. As a long-standing researcher at Parke-Davis, Rebstock dedicated her career to clinical chemistry, contributing to the development of various therapeutic agents and antibiotics. Her pioneering efforts paved the way for industrial-scale drug manufacturing, drastically improving the treatment of serious bacterial infections like typhoid fever. A trailblazer for women in science, she remained a respected figure in the pharmaceutical industry throughout her multi-decade tenure, leaving a lasting legacy in the field of medicinal chemistry.

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Full Timeline

November 29, 1919: Birth of Mildred Catherine Rebstock

On November 29, 1919, Mildred Catherine Rebstock was born. She would go on to become a prominent American pharmaceutical chemist known for her groundbreaking work in synthesizing antibiotics.

1919: Birth of Mildred Catherine Rebstock

On November 29, 1919, Mildred Catherine Rebstock was born in Elkhart, Indiana, to parents Redna and Adolph Rebstock.

1938: Graduation from Elkhart High School

In 1938, Mildred Rebstock completed her secondary education by graduating from Elkhart High School, after which she began her studies at North Central College.

1942: Bachelor's Degree and University Enrollment

In 1942, Mildred Rebstock graduated from North Central College with a bachelor's degree and subsequently enrolled at the University of Illinois at Urbana-Champaign to pursue a doctoral degree, supported by a fellowship to research ascorbic acid.

1943: Completion of Master's Degree

Mildred Rebstock successfully earned her master's degree in 1943 while continuing her scientific research at the University of Illinois.

1945: Commencement of Employment at Parke-Davis

In 1945, Dr. Mildred Rebstock began her tenure at Parke-Davis Research Labs, where she served as a junior research chemist.

1945: Doctoral Degree and Academic Honors

In 1945, Mildred Rebstock earned her doctorate and was formally initiated into the academic honor societies Phi Beta Kappa and Sigma Xi.

November 1947: Full Synthesis of Chloromycetin

In November 1947, Dr. Mildred Rebstock successfully developed a method to fully synthesize the antibiotic chloromycetin, a feat that proved to be more cost-effective than traditional fermentation methods.

1949: Publication of Chloromycetin Synthesis

In 1949, Dr. Rebstock and her research team officially published their findings regarding the synthesis of the antibiotic chloromycetin, marking a significant contribution to medical science as of 1949.

1949: Time Magazine Feature on Mildred Rebstock

In 1949, Time magazine published an article recognizing Mildred Rebstock as a 28-year-old research chemist and highlighting her vital role in a groundbreaking scientific team achievement.

1950: Science Woman of the Year Award

In 1950, Mildred Rebstock received the Science Woman of the Year award from the Women's National Press Club of Washington DC, an honor presented to her by President Harry S. Truman.

1959: Promotion to Research Leader

Following her years of dedicated work, Dr. Rebstock received a promotion to the position of research leader at Parke-Davis in 1959.

1977: Conclusion of Employment at Parke-Davis

Dr. Rebstock concluded her long-standing professional career at Parke-Davis Research Labs in 1977 after serving there since 1945.

February 17, 2011: Death of Mildred Catherine Rebstock

Mildred Catherine Rebstock passed away on February 17, 2011, leaving behind a significant legacy in the field of pharmaceutical chemistry due to her successful synthesis of chloromycetin.