Act-purpurin 5 dimethyl ester, also known as Actinomycin D or dactinomycin, is a naturally occurring cytotoxic antibiotic derived from Streptomyces parvulus. It is a member of the actinomycin family of drugs, characterized by its ability to intercalate into DNA, inhibiting RNA synthesis and ultimately leading to cell death. This chemical is primarily used as an antineoplastic agent in the treatment of various cancers, including Wilms' tumor, Ewing's sarcoma, and rhabdomyosarcoma. Act-purpurin 5 dimethyl ester is known for its potent activity against rapidly dividing cells, making it a valuable tool in oncology. However, its use is limited due to its potential side effects, which include bone marrow suppression and gastrointestinal toxicity.
The CAS Registry Mumber 5111-05-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,1,1 and 1 respectively; the second part has 2 digits, 0 and 5 respectively. Calculate Digit Verification of CAS Registry Number 5111-05: (6*5)+(5*1)+(4*1)+(3*1)+(2*0)+(1*5)=47 47 % 10 = 7 So 5111-05-7 is a valid CAS Registry Number.