(2-Chloro-ethyl)-(2,4-dinitro-phenyl)-sulfide, also known as mustard gas, is a chemical warfare agent with the chemical formula C4H7ClN2O4S. It is a colorless, oily liquid at room temperature with a garlic-like odor. Mustard gas is a potent vesicant, causing severe skin blistering, eye damage, and respiratory issues upon exposure. It was first used during World War I and is known for its ability to cause long-term health effects, including respiratory problems, skin issues, and an increased risk of cancer. The compound is highly reactive and can form adducts with DNA, leading to mutations and other genetic damage. Due to its severe health risks and potential for misuse, mustard gas is classified as a chemical weapon and is regulated under international law.
The CAS Registry Mumber 5535-74-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,3 and 5 respectively; the second part has 2 digits, 7 and 4 respectively. Calculate Digit Verification of CAS Registry Number 5535-74: (6*5)+(5*5)+(4*3)+(3*5)+(2*7)+(1*4)=100 100 % 10 = 0 So 5535-74-0 is a valid CAS Registry Number.