[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-52441-en":3,"doc-seo-52441-105":30,"detail-sidebar-cat-0-en-105":91},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"doc_content":15,"file_id":16,"file_url":17,"file_type":18,"file_size":19,"view_count":20,"is_deleted":4,"is_public":21,"is_downloadable":21,"audit_status":21,"page_count":22,"language":23,"language_code":24,"site_id":25,"html_lang":24,"table_of_contents":26,"faqs":27,"seo_title":13,"seo_description":14,"update_tm":28,"read_time":29},52441,687197207057,"Sage","https://ap-avatar.wpscdn.com/davatar_29158cc5080c5b710cf443261637dec0",7,"Healthcare","Specification of Drug Substances and Products Development and Validation of Analytical Methods Third Edition","Provides an expert overview of pharmaceutical analytical method development and validation, framed within drug substance and drug product specification practices. Introduces the scientific and historical foundations of quality control using statistical sampling, statistical design of experiments (DOE), and mean-based decision making, referencing seminal work by “Student” (William Sealy Gosset) and the principles of Walter Shewhart. Includes editor and contributor background supporting CMC regulatory experience and formulation-specific analytical expertise.","SPECIFICATION OF DRUG  \nSUBSTANCES AND PRODUCTS  \nDEVELOPMENT AND VALIDATION OF ANALYTICAL METHODS  \nTHIRD EDITION  \nEdited by CHRISTOPHER M. RILEY  \nRiley and Rabel Consulting Services, Estero, FL, United States  \nK. LIEN NGUYEN IRL AB, Gothenburg, Sweden  \nAbout the editors  \nDr. Christopher Riley is the President of Riley and Rabel Consulting Services. He received his bachelor’s degree in Pharmacy (1977) and PhD degree in Pharmaceutical Chemistry (1980) from the University of Bath, UK. He had postdoctoral experience at the University of Kansas in the Department of Pharmaceutical Chemistry (1981e82) before serving on the faculties of the Department of Pharmaceutics at the University of Florida (USA) (1983e86) and the Department of Pharmaceutical Chemistry at the University of Kansas (USA) (1986e94) . He was the Vice President and Head of Analytical R&Dat Dupont Pharmaceuticals (USA) (previously Dupont Merck) from 1994 to 2001 . He has held positions of increasing responsibility up to Vice President and West Coast Site Head ChemPharm Development at Johnson & Johnson (USA) (2001e07) . He has coauthored more than 140 book chapters and papers in peer-reviewed journals, as well as 5 books. Dr. Riley served as a chair of the PhRMA Analytical Technical Leadership Committee and  \nchair of the PhRMA Technical, Development and Operations Leadership Committee (TLC) . Dr. Riley represented PhRMA on the ICH Expert Working Group on Impurities in Drug Substances (Q3A) and Drug Products (Q3B) and was chair of the PhRMA Working Group on Genotoxic Impurities. He has extensive experience in CMC regulatory affairs and the development of all types of dosage forms.  \nDr. K. Lien Nguyen is the Head of Chemistry, Manufacturing and Control at IRL AB in Sweden. She received a Bachelor of Chemical Engineering degree from the University of Adelaide, Australia (2003), and PhD in Chemical Engineering from the University of Cambridge, UK (2007) . She worked at GlaxoSmithKline (UK), AstraZeneca(Sweden), and Savara Pharmaceuticals(Denmark) in various roles across pharmaceutical development. She has extensive experience in the development of all types of dosage forms in general, and inhalation products in particular, from preclinical phase to launch phase.  \n1  \nIntroduction  \nChristopher M. Riley 1 , K. Lien Nguyen2 , Gerald Gellermann3  \nand Stephan Kirsch4  \n1Riley and Rabel Consulting Services, Inc., Estero, FL, United States; 2IRL AB, Göteborg, Sweden; 3Technical R&D Biologics, Novartis Pharma AG, Basel, Switzerland; 4Technical R&D Biologics, Novartis Pharmaceutical Manufacturing  \nGmbH, Langkampfen, Austria  \n 1.1 Historical perspective   \nAny experiment may be regarded as forming an individual of a “population” of experiment which might be performed under the same set of conditions. A series of experiments is sample drawn from this population.  \nNow any series of experiments is only of value in so far as it enables us to form a judgment as to the statistical constants of the population to which the experiments belong.  \nIn a great number of cases the question finally turns on the value of a mean, either directly, or as the mean difference between the two quantities.1  \nThese sentences are arguably the most consequential assertions ever made within the field of quality control (QC) but what is so remarkable is the statements were published in 1908, not as what might reasonably imagine within the context of the QC of drugs but are taken from the famous article written by Student published in 1908 in the journal Biometrika, concerning the quality control of Guinness beer. This work concerned the economic benefit of decision theory, sampling, and design of experiments (DOE) published in a seminal paper entitled “The Probable Error of the Mean”1 under the pseudonym “Student”, because the Guinness Company encouraged its employees to publish their work provided, they did not reveal their name, industry, or employer. Student’s work centered on the importance of ","cbCaifmXtWAmwLLe","https://ap.wps.com/l/cbCaifmXtWAmwLLe","pdf",43685622,3,1,874,"English","en",105,"# Introduction\n## Historical perspective","[{\"question\":\"What statistical ideas are emphasized in the historical perspective of the quality control approach?\",\"answer\":\"The text emphasizes viewing experiments as a “population,” using series of experiments to estimate statistical constants, and focusing on mean values directly or as mean differences. It links these principles to sampling theory and decision-making under controlled conditions.\"},{\"question\":\"Why is “Student’s” 1908 work considered influential for analytical quality control?\",\"answer\":\"The document connects Student’s 1908 article on the probable error of the mean to the importance of controlling incoming raw materials to ensure final product consistency. It notes that the work was published under a pseudonym and later identified as William Sealy Gosset.\"},{\"question\":\"How does Walter Shewhart’s contribution relate to manufacturing quality control?\",\"answer\":\"Shewhart is described as the father of statistical quality control, particularly for developing control charts to track changes in manufacturing processes. The text states that Shewhart’s principles, alongside sampling theory and DOE, underpin control strategies across industries including pharmaceuticals.\"}]",1783644083,2202,{"code":4,"msg":31,"data":32},"ok",{"site_id":25,"language":24,"slug":33,"title":13,"keywords":34,"description":14,"schema_data":35,"social_meta":86,"head_meta":88,"extra_data":90,"updated_unix":28},"specification-of-drug-substances-and-products-development-and-validation-of-analytical-methods-third-edition","",{"@graph":36,"@context":85},[37,53,68],{"@type":38,"itemListElement":39},"BreadcrumbList",[40,44,48,50],{"item":41,"name":42,"@type":43,"position":21},"https://docshare.wps.com","Home","ListItem",{"item":45,"name":46,"@type":43,"position":47},"https://docshare.wps.com/document/","Document",2,{"item":49,"name":12,"@type":43,"position":20},"https://docshare.wps.com/document/healthcare/",{"item":51,"name":13,"@type":43,"position":52},"https://docshare.wps.com/document/specification-of-drug-substances-and-products-development-and-validation-of-analytical-methods-third-edition/52441/",4,{"url":51,"name":13,"@type":54,"author":55,"headline":13,"publisher":57,"fileFormat":60,"inLanguage":24,"description":14,"dateModified":61,"datePublished":62,"encodingFormat":60,"isAccessibleForFree":63,"interactionStatistic":64},"DigitalDocument",{"name":9,"@type":56},"Person",{"url":41,"name":58,"@type":59},"DocShare","Organization","application/pdf","2026-07-14","2026-07-10",true,{"@type":65,"interactionType":66,"userInteractionCount":20},"InteractionCounter",{"@type":67},"ViewAction",{"@type":69,"mainEntity":70},"FAQPage",[71,77,81],{"name":72,"@type":73,"acceptedAnswer":74},"What statistical ideas are emphasized in the historical perspective of the quality control approach?","Question",{"text":75,"@type":76},"The text emphasizes viewing experiments as a “population,” using series of experiments to estimate statistical constants, and focusing on mean values directly or as mean differences. It links these principles to sampling theory and decision-making under controlled conditions.","Answer",{"name":78,"@type":73,"acceptedAnswer":79},"Why is “Student’s” 1908 work considered influential for analytical quality control?",{"text":80,"@type":76},"The document connects Student’s 1908 article on the probable error of the mean to the importance of controlling incoming raw materials to ensure final product consistency. It notes that the work was published under a pseudonym and later identified as William Sealy Gosset.",{"name":82,"@type":73,"acceptedAnswer":83},"How does Walter Shewhart’s contribution relate to manufacturing quality control?",{"text":84,"@type":76},"Shewhart is described as the father of statistical quality control, particularly for developing control charts to track changes in manufacturing processes. The text states that Shewhart’s principles, alongside sampling theory and DOE, underpin control strategies across industries including pharmaceuticals.","https://schema.org",{"og:url":51,"og:type":87,"og:title":13,"og:site_name":58,"og:description":14},"article",{"robots":89,"canonical":51},"index,follow",{"doc_id":7,"site_id":25},{"code":4,"msg":5,"data":92},[93,97,101,105,110,115,118,123,128,131,135],{"id":21,"doc_module":4,"doc_module_name":46,"category_name":94,"show_sort_weight":95,"slug":96},"Story & Novel",90,"story-novel",{"id":47,"doc_module":4,"doc_module_name":46,"category_name":98,"show_sort_weight":99,"slug":100},"Literature",80,"literature",{"id":52,"doc_module":4,"doc_module_name":46,"category_name":102,"show_sort_weight":103,"slug":104},"Exam",70,"exam",{"id":106,"doc_module":4,"doc_module_name":46,"category_name":107,"show_sort_weight":108,"slug":109},5,"Comic",60,"comic",{"id":111,"doc_module":4,"doc_module_name":46,"category_name":112,"show_sort_weight":113,"slug":114},6,"Technology",50,"technology",{"id":11,"doc_module":4,"doc_module_name":46,"category_name":12,"show_sort_weight":116,"slug":117},40,"healthcare",{"id":119,"doc_module":4,"doc_module_name":46,"category_name":120,"show_sort_weight":121,"slug":122},8,"Research & Report",30,"research-report",{"id":124,"doc_module":4,"doc_module_name":46,"category_name":125,"show_sort_weight":126,"slug":127},9,"Religion & Spirituality",20,"religion-spirituality",{"id":126,"doc_module":4,"doc_module_name":46,"category_name":129,"show_sort_weight":126,"slug":130},"World Cup","world-cup",{"id":132,"doc_module":4,"doc_module_name":46,"category_name":133,"show_sort_weight":132,"slug":134},10,"Lifestyle","lifestyle",{"id":136,"doc_module":4,"doc_module_name":46,"category_name":137,"show_sort_weight":106,"slug":138},19,"General","general"]