Sesqui- and oxy-mustards pose a significant threat to military forces and civilians because they are potent vesicants. We have developed an isotope-dilution high-performance liquid chromatography-atmospheric pressure chemical ionization-tandem mass spectrometry method utilizing negative ion multiple reaction monitoring for the analysis of sesqui-mustard metabolites bis(2-hydroxyethylthio)alkanes (n = 1-5) and oxy-mustard metabolite bis(2-hydroxyethylthioethyl)ether in human urine. Relative standard deviations were < 10% and the reportable limits of detection were 1 ng/mL in 0.5 mL of urine. We applied this method to 100 samples collected from individuals with no known exposure to sesqui- or oxy-mustards, and no urines showed detectable levels of any of the analytes, suggesting that these metabolites may be used for monitoring exposure to sesqui- and oxy-mustards.
IDENTIFICATION AND USE: Sesquimustard (Q) is a vesicant/blister agent more potent than distilled mustard (HD). It is combined with HD to form agent HQ. It could also be formed in small amounts during storage of HD in ton containers. HUMAN STUDIES: Vesicants, also referred to as "blister agents," were the most commonly used chemical warfare agents during World War I. The most likely routes of exposure are inhalation, dermal contact, and ocular contact. Vesicants are highly reactive chemicals that combine with proteins, DNA, and other cellular components to result in cellular changes immediately after exposure. Clinical effects may be delayed for 2 to 24 hours. Following exposure, the most commonly encountered clinical effects include dermal (skin erythema and blistering), respiratory (pharyngitis, cough, dyspnea), ocular (conjunctivitis and burns), and gastrointestinal (nausea and vomiting). The amount and route of exposure to the vesicant, the type of vesicant, and the premorbid condition of the person exposed will contribute to the time of onset and the severity of illness. For example, ingestion of a vesicant leads to gastrointestinal symptoms more prominent than those that would result from inhalation exposure to the same dose and type of vesicant. ANIMAL STUDIES: Acute inhalation toxicity studies with sesquimustard have been made in mice, rats, guinea pigs, hamsters, pigeons, and dogs. Following exposure, animals show loss of body weight, coughing, dyspnea, ataxia, and diarrhea prior to death. Deaths occurred over a 14-day observation period with a primary peak between the third and sixth day. Tissue damage in most animals was limited to the upper respiratory tract and digestive tract.
/SRP:/ Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Blister Agents (Vesicants)/
/SRP:/ Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Aggressive airway control may be needed. Watch for signs of respiratory insufficiency and assist ventilations it necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . Anticipate seizures and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . /Blister Agents (Vesicants)/
/SRP:/ Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious or is in severe respiratory distress. Early intubation at the first sign of upper airway obstruction may be necessary. Positive-pressure ventilation techniques with a bag-valve-mask device may be beneficial. Monitor cardiac rhythm and treat arrhythmias as necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's (LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors if patient is hypotensive with a normal fluid volume. Watch for signs of fluid overload ... . Treat seizures with diazepam (Valium) or lorazepam (Ativan) ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Blister Agents (Vesicants)/
/SIGNS AND SYMPTOMS/ Vesicants, also referred to as "blister agents," were the most commonly used chemical warfare agents during World War I. The most likely routes of exposure are inhalation, dermal contact, and ocular contact. Vesicants are highly reactive chemicals that combine with proteins, DNA, and other cellular components to result in cellular changes immediately after exposure. Depending on the vesicant, clinical effects may occur immediately (as with phosgene oxime or lewisite) or may be delayed for 2 to 24 hours (as with mustards). Following exposure, the most commonly encountered clinical effects include dermal (skin erythema and blistering), respiratory (pharyngitis, cough, dyspnea), ocular (conjunctivitis and burns), and gastrointestinal (nausea and vomiting). The amount and route of exposure to the vesicant, the type of vesicant, and the premorbid condition of the person exposed will contribute to the time of onset and the severity of illness. For example, ingestion of a vesicant leads to gastrointestinal symptoms more prominent than those that would result from inhalation exposure to the same dose and type of vesicant. /Vesicants/
Mass Spectral Studies on Vinylic Degradation Products of Sulfur Mustards under Gas Chromatography/Mass Spectrometry Conditions
作者:L. Sai Sachin、R. Karthikraj、K. Kalyan Kumar、T. Sony、N. Prasada Raju、S. Prabhakar
DOI:10.1255/ejms.1398
日期:2015.12
Sulfur mustards are a class of vesicant chemical warfare agents that rapidly degrade in environmental samples. The most feasible degradation products of sulfur mustards are chloroethyl vinylic compounds and divinylic compounds, which are formed by the elimination of one and two HCl molecules from sulfur mustards, respectively. The detection and characterization of these degradation products in environmental samples are an important proof for the verification of sulfur mustard usage. In this study, we synthesized a set of sulfur mustard degradation products, i.e., divinylic compounds (1–7) and chloroethyl vinylic compounds (8–14), and characterized using gas chromatography/mass spectrometry (GC/MS) under electron ionization (EI) and chemical ionization (CI) (methane) conditions. The EI mass spectra of the studied compounds mainly included the fragment ions that resulted from homolytic cleavages with or without hydrogen migrations. The divinylic compounds (1–7) showed [M – SH]+ ions, whereas the chloroethylvinyl compounds (8–14) showed [M – Cl]+ and [M – CH2CH2Cl]+ ions. Methane/CI mass spectra showed [M + H]+ ions and provided molecular weight information. The GC retention index (RI) values were also calculated for the studied compounds. The EI and CI mass spectral data together with RI values are extremely useful for off-site analysis for the verification of the chemical weapons convention and also to participate in official Organization for the Prohibition of Chemical Weapons proficiency tests.
[EN] VITAMIN D RECEPTOR MODULATORS<br/>[FR] MODULATEURS DE RECEPTEUR DE VITAMINE D
申请人:LILLY CO ELI
公开号:WO2004048309A1
公开(公告)日:2004-06-10
The present invention relates to novel, non-secosteroidal, diaryl compounds with vitamin D receptor (VDR) modulating activity that are less hypercalcemic than 1a,25 dihydroxy vitamin D3. These compounds are useful for treating bone disease and psoriasis.
THERMAL DEGRADATION OF BIS (2-CHLOROETHYL) SULFIDE (MUSTARD GAS)
作者:George W. Wagner、Brian K. Maciver、Dennis K. Rohrbaugh、Yu-Chu Yang
DOI:10.1080/10426509908031618
日期:1999.9.1
Abstract The thermal degradation of mustard gas (ClCH2CH2SCH2CH2Cl, “HD”), with and without 5% added water, is examined. GC/MS, LC/MS and NMR were employed to comprehensively analyze the products. After 75 days at 90°C, 91% HD remains (80% with 5% water). After 40 days at 140°C, 30% HD remains (24% with 5% water) and black “tar” precipitates form. The apparent Ea is 22.4 kcal/mol. Major products include
Vesicant treatment with phenyl-phenyl type vitamin d receptor modulators
申请人:Nagpal Sunil
公开号:US20060094778A1
公开(公告)日:2006-05-04
The present invention relates to a method of treating or preventing damage to human skin cells by chemical vesicants by administering a non-secosteroidal, diphenyl compound with vitamin D receptor (VDR) modulating activity.
[EN] VITAMIN D RECEPTOR MODULATORS<br/>[FR] MODULATEURS DE RECEPTEUR DE LA VITAMINE D
申请人:LILLY CO ELI
公开号:WO2005051938A1
公开(公告)日:2005-06-09
The present invention relates to novel, non-secosteroidal, phenyl-benzofuran compounds with vitamin D receptor (VDR) modulating activity that are less hypercalcemic than 1α,25 dihydroxy vitamin D3. These compounds are useful for treating bone disease and psoriasis.