Wikipedia's first sentence called it “leading pakistani scientist in natural products chemistry”. Today it says “pakistani organic chemist specialising in natural products”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
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The opening as it read in 2025
Salimuzzaman Siddiqui , HI , MBE , SI , FPAS , FRS ( Urdu : سلیم الزّماں صدّیقی [səˈliːmʊzːəmaːn sɪˈd̪ːiːqi] ; 19 October 1897 – 14 April 1994) was a Pakistani organic chemist specialising in natural products , and a professor of chemistry at the University of Karachi . Siddiqui studied philosophy at Aligarh Muslim University and later studied chemistry at Frankfurt University , where he received his PhD in 1927. On return to British India , he worked at the Tibbia College Delhi and the Indian Council for Scientific and Industrial Research . He later moved to Pakistan and worked in the Pakistan Council of Scientific and Industrial Research . He went on to establish the Pakistan National Science Council and was appointed its first chairman in 1961. In the same year he became a Fellow of the Royal Society . He later co-founded the Pakistan Academy of Sciences , and after retirement from the government, he founded the Hussain Ebrahim Jamal Research Institute of Chemistry . Siddiqui is credited with pioneering the isolation of unique chemical compounds from the Neem ( Azadirachta indica ) , Rauvolfia , and various other flora . As the founder director of H.E.J. Research Institute of Chemistry , he revolutionised research of the pharmacology of various domestic plants found in South Asia to extract novel chemical substances of medicinal importance. During his career, Siddiqui published more than 300 research papers and obtained 40 patents mainly from the field of natural product chemistry. In addition to his scientific talents, Siddiqui was also an avid painter, poet, and a great connoisseur of Western music . His paintings were exhibited in the United States, Germany, India, and Pakistan.
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1292433739.
The opening as it stood in 2010
Prof Dr Salimuzzaman Siddiqui ( Urdu سلیم الزّماںصدّیقی, pronounced ) (19 October 1897 - 14 April 1994) was a leading Pakistani scientist in natural products chemistry . He is credited for pioneering the isolation of unique chemical compounds from the Neem ( Azadirachta indica ) , Rauwolfia , and various other flora . As the founder director of H.E.J. Research Institute of Chemistry , he revolutionised the research on pharmacology of various domestic plants found in South Asia to extract novel chemical substances of medicinal importance. In addition to his scientific talents, Siddiqui was also a painter , a poet, and a great connoisseur of music . His paintings were exhibited in Germany, India, and Pakistan.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 367588224.
The opening as it stood in 2015 1 passage from the previous snapshot no longer appear
Salimuzzaman Siddiqui ( ; 19 October 1897 – 14 April 1994), HI , MBE , SI , DPhil, FPAS , FRS , was a Pakistani organic chemist , versatile scholar, and a leading scientist in the natural product chemistry . He is credited for pioneering the isolation of unique chemical compounds from the Neem ( Azadirachta indica ) , Rauwolfia , and various other flora . As the founder director of H.E.J. Research Institute of Chemistry , he revolutionised the research on pharmacology of various domestic plants found in South Asia to extract novel chemical substances of medicinal importance. In addition to his scientific talents, Siddiqui was also an avid painter , a poet , and a great connoisseur of Western music .His paintings were exhibited in the United States , Germany , India , and Pakistan .Attention: This template ( ) is deprecated.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 663939947.
The opening as it stood in 2020 2 passages from the previous snapshot no longer appear
Pakistani organic chemist (1897–1994) Salimuzzaman Siddiqui , HI , MBE , SI , FPAS , FRS ( ; 19 October 1897 – 14 April 1994) was a Pakistani organic chemist specialising in natural products , and a professor of chemistry at the University of Karachi .Siddiqui studied philosophy at Aligarh Muslim University and later studied chemistry at Frankfurt University , where he received his PhD in 1927.On return to British India , he worked at the Tibbia College Delhi and the Indian Council for Scientific and Industrial Research .He later moved to Pakistan and worked in the Pakistan Council of Scientific and Industrial Research .He went on to establish the Pakistan National Science Council and was appointed as its first chairman in 1961.In the same year he became a Fellow of the Royal Society .He later co-founded the Pakistan Academy of Sciences , and after retirement from the government, he founded the Hussain Ebrahim Jamal Research Institute of Chemistry .Siddiqui is credited for pioneering the isolation of unique chemical compounds from the Neem ( Azadirachta indica ) , Rauvolfia , and various other flora . As the founder director of H.E.J. Research Institute of Chemistry , he revolutionised research of the pharmacology of various domestic plants found in South Asia to extract novel chemical substances of medicinal importance.During his career, Siddiqui published more than 300 research papers and obtained 40 patents mainly from the field of natural product chemistry. In addition to his scientific talents, Siddiqui was also an avid painter, poet, and a great connoisseur of Western music . His paintings were exhibited in the United States, Germany, India, and Pakistan.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 962401765.
The opening as it stood on October 6, 2023
Pakistani organic chemist (1897–1994) Salimuzzaman Siddiqui , HI , MBE , SI , FPAS , FRS ( ; 19 October 1897 – 14 April 1994) was a Pakistani Muhajir organic chemist specialising in natural products , and a professor of chemistry at the University of Karachi . Siddiqui studied philosophy at Aligarh Muslim University and later studied chemistry at Frankfurt University , where he received his PhD in 1927. On return to British India , he worked at the Tibbia College Delhi and the Indian Council for Scientific and Industrial Research . He later moved to Pakistan and worked in the Pakistan Council of Scientific and Industrial Research . He went on to establish the Pakistan National Science Council and was appointed its first chairman in 1961. In the same year he became a Fellow of the Royal Society . He later co-founded the Pakistan Academy of Sciences , and after retirement from the government, he founded the Hussain Ebrahim Jamal Research Institute of Chemistry . Siddiqui is credited with pioneering the isolation of unique chemical compounds from the Neem ( Azadirachta indica ) , Rauvolfia , and various other flora . As the founder director of H.E.J. Research Institute of Chemistry , he revolutionised research of the pharmacology of various domestic plants found in South Asia to extract novel chemical substances of medicinal importance. During his career, Siddiqui published more than 300 research papers and obtained 40 patents mainly from the field of natural product chemistry. In addition to his scientific talents, Siddiqui was also an avid painter, poet, and a great connoisseur of Western music . His paintings were exhibited in the United States, Germany, India, and Pakistan.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 1158605448.
Today
Wikipedia's first sentence called it “leading pakistani scientist in natural products chemistry”. Today it says “pakistani organic chemist specialising in natural products”. Read the current article and compare.
2010
2015
2020
Oct '23
2025
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What Wikipedia says this is
Every article opens by defining its subject. This one was redefined since 2010, and today's defining sentence is their current revision.
Then
leading pakistani scientist in natural products chemistry
Now
pakistani organic chemist specialising in natural products
Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.