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General

Ipragliflozin

Ipragliflozin (ASP1941, Suglat) is a selective SGLT2 inhibitor for type 2 and type 1 diabetes, first approved in Japan in January 2014; dosing 50-100 mg once daily, glucose excreted in urine.

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Ipratropium bromide

Ipratropium bromide (Atrovent) is an inhaled anticholinergic, short-acting bronchodilator introduced in 1974 and FDA-approved in 1986, used for COPD maintenance, acute asthma add-on therapy, and as a nasal spray for cold-related runny nose.

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iPrEx trial

iPrEx (Preexposure Prophylaxis Initiative), NCT00458393, was a 2010 phase III placebo-controlled trial of daily oral TDF/FTC (Truvada) PrEP in 2,499 MSM and transgender women across six countries, showing 44% HIV risk reduction overall and 92% with detectable drug levels.

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Iprindole

Iprindole (ATC N06AA13) is a tricyclic antidepressant, an indole with an eight-membered saturated third ring, approved in Great Britain in 1967; it weakly inhibits norepinephrine and serotonin uptake, has weak antimuscarinic and sedative effects, and does not block REM sleep.

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Iprobenfos

Iprobenfos (IBP, Kitazin) is an organophosphorus phosphorothiolate systemic fungicide, CAS 26087-47-8, C13H21O3PS, inhibiting phospholipid biosynthesis; registered in Japan in 1967 for rice blast, stem rot, and sheath blight control, not EU-approved.

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Iprodione

Iprodione (CAS 36734-19-7) is a dicarboximide contact fungicide, FRAC group 2, introduced 1974, used against Botrytis and Sclerotinia; banned in the EU since 2017 but still registered in the US and Canada.

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Iproniazid

Iproniazid is a hydrazine-derived monoamine oxidase inhibitor developed as a tuberculosis drug in 1951 that became the first antidepressant before its 1961 withdrawal for liver injury.

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iPronics

iPronics is a Valencia-based silicon-photonics startup founded in 2019 as a spin-off from the Universitat Politècnica de València, making programmable photonic chips and the iPronics ONE optical circuit switch for AI data centers.

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Iprovalicarb

Iprovalicarb (缬霉威, SZX 0722) is a systemic valinamide-carbamate CAA fungicide (FRAC code 40) against oomycetes like downy mildew and late blight; EU-approved 2016-2031, CAS 140923-17-7.

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IPS panel

An IPS panel (in-plane switching) is a type of liquid-crystal display known for wide viewing angles and stable color, developed by Hitachi in 1995 and common in computer monitors.

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IPsec

IPsec, or Internet Protocol Security, is an IETF-standardized suite of protocols at the IP layer providing authentication, integrity, and confidentiality for packets, and a common basis for VPNs.

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Ipseeta Menon

Ipseeta Menon, a researcher who focused on fibrinolytic activity, proposed that the kidney and brain contribute plasminogen activator to the circulation in amounts determined by blood flow.

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IPSL-CM

IPSL-CM is a family of coupled climate and Earth system models developed by the Institut Pierre-Simon Laplace in Paris, contributing to CMIP3, CMIP6, and IPCC reports.

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Ipsos

Ipsos, also known as Ipsos Group, is a multinational market research and public opinion polling company listed on Euronext Paris, with nearly 19,000 employees in 90 markets.

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Ipsus

Ipsus, also known as Ipsos, was a small ancient town of Phrygia in central Turkey, known for the battle of 301 BC in which Antigonus was killed.

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Ipswich

Ipswich (Gipeswic) is the county town of Suffolk, England, at the head of the Orwell estuary. One of only four Middle Saxon emporia, it grew from a 7th-century trading port into a borough of about 139,600 people (2021).

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Ipswich serial murders

Ipswich serial murders, also called the Suffolk murders or Suffolk Strangler case: Steve Wright killed five sex workers in Ipswich, England, in late 2006, was convicted in 2008, and admitted a sixth 1999 murder in 2026.

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Ipswich Town F.C.

Ipswich Town F.C. (the Blues, Tractor Boys), English club founded 1878, professional 1936, Football League 1938; Portman Road home; First Division champions 1961-62, FA Cup 1978, UEFA Cup 1981; promoted to Premier League 2026.

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Ipswich, Massachusetts

Ipswich, Massachusetts: Essex County North Shore town incorporated 1634 on the Agawam site, settled 1633 by John Winthrop Jr.; noted for First Period houses, Crane Beach, and Plum Island refuges.

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Iptables

Iptables is the userspace program that configures the Linux kernel's packet filtering and NAT rules, written by Rusty Russell's netfilter project and shipped in Linux 2.4 in 2001.

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Iptacopan

Iptacopan (Fabhalta) is Novartis's oral, first-in-class complement factor B inhibitor approved for paroxysmal nocturnal hemoglobinuria (2023), C3 glomerulopathy (2025), and IgA nephropathy, dosed 200 mg twice daily under a REMS.

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Iptar-Sin

Iptar-Sin was an early Assyrian king of the Adaside line, recorded as the fifty-first ruler in the Assyrian King List, with a reign of twelve years.

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Ipuki

Ipuki (also Ipuky) was an ancient Egyptian chief sculptor of the 18th Dynasty under Amenhotep III, known from the Theban tomb TT181, shared with fellow sculptor Nebamun.

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Iput I

Iput I was a queen of Egypt's Sixth Dynasty, the wife of King Teti and mother of Pepi I, buried in her own pyramid at Saqqara.

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Iput II

Iput II, also written Ipwet, was a queen of Sixth Dynasty Egypt and a wife of the long-reigning king Pepi II, buried in a pyramid at South Saqqara.

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Ipuy (TT217)

TT217 is the Theban tomb of Ipuy, a sculptor at Deir el-Medina, built under Ramesses II and known for rare polychrome scenes of carpenters, fishermen, and laundrymen.

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IPV Vaccine AJV

IPV Vaccine AJV is a WHO-prequalified trivalent inactivated polio vaccine by AJ Vaccines A/S, Denmark (prequalified 23 December 2010), a single-dose 0.5 ml vial with no preservatives or adjuvants, distinct from AJ Vaccines' adjuvanted low-dose Picovax.

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IPv4

IPv4, also known as Internet Protocol version 4, is the fourth version of the Internet Protocol, carrying Internet traffic with 32-bit addresses since ARPANET adopted it in 1983.

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IPv4 address exhaustion

IPv4 address exhaustion is the depletion of the free pool of IPv4 addresses, whose 4.3 billion values could not keep pace with the Internet's growth; the IANA pool ran out in 2011.

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IPv6

IPv6 (Internet Protocol version 6, once called IP Next Generation) is the newest version of the Internet Protocol, replacing IPv4's 32-bit addresses with 128-bit addresses, standardized in RFC 8200.