4,4'-Bis-diphenyl-disulfid, also known as mechlorethamine, is a chemical compound with the molecular formula C16H20Cl4N2O4S2. It is a bis(2-chloroethyl)amine derivative, which is a type of nitrogen mustard alkylating agent. 4,4'-Bis-diphenyl-disulfid is known for its cytotoxic properties and has been historically used as a chemotherapeutic agent, particularly in the treatment of various types of cancer. It works by cross-linking DNA strands, which prevents cell division and ultimately leads to cell death. Due to its highly reactive nature and potential side effects, its use in modern medicine has been largely replaced by less toxic alternatives.
The CAS Registry Mumber 6548-20-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,5,4 and 8 respectively; the second part has 2 digits, 2 and 0 respectively. Calculate Digit Verification of CAS Registry Number 6548-20: (6*6)+(5*5)+(4*4)+(3*8)+(2*2)+(1*0)=105 105 % 10 = 5 So 6548-20-5 is a valid CAS Registry Number.