Purothionin, also known as puromycin, is an aminonucleoside antibiotic derived from Streptomyces alboniger. It is primarily used as an antineoplastic and antiviral agent, functioning by inhibiting protein synthesis in both prokaryotic and eukaryotic cells. Purothionin works by mimicking aminoacyl-tRNA, leading to premature chain termination and the production of nonfunctional proteins. Due to its broad-spectrum activity, it has been utilized in various research applications, such as studying protein synthesis and gene expression. However, its use in clinical settings is limited due to its toxicity and potential side effects, including nephrotoxicity and ototoxicity.
The CAS Registry Mumber 9009-72-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,0 and 9 respectively; the second part has 2 digits, 7 and 2 respectively. Calculate Digit Verification of CAS Registry Number 9009-72: (6*9)+(5*0)+(4*0)+(3*9)+(2*7)+(1*2)=97 97 % 10 = 7 So 9009-72-7 is a valid CAS Registry Number.