503305-89-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 503305-89-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,3,3,0 and 5 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 503305-89:
(8*5)+(7*0)+(6*3)+(5*3)+(4*0)+(3*5)+(2*8)+(1*9)=113
113 % 10 = 3
So 503305-89-3 is a valid CAS Registry Number.
503305-89-3Relevant articles and documents
A Concise Total Synthesis of (+)-FR900482 and (+)-FR66979
Judd, Ted C.,Williams, Robert M.
, p. 2825 - 2830 (2007/10/03)
The concise, enantioselective total synthesis of the potent antitumor antibiotics (+)-FR900482 and (+)-FR66979 are described. Sharpless asymmetric epoxidation technology has been deployed to construct the optically active aziridine-containing fragment tha