649774-76-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 649774-76-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,9,7,7 and 4 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 649774-76:
(8*6)+(7*4)+(6*9)+(5*7)+(4*7)+(3*4)+(2*7)+(1*6)=225
225 % 10 = 5
So 649774-76-5 is a valid CAS Registry Number.
649774-76-5Relevant academic research and scientific papers
Total Synthesis of Lactonamycinone
Siu, Tony,Cox, Christopher D.,Danishefsky, Samuel J.
, p. 5629 - 5634 (2007/10/03)
A revised strategy was required for the installation of the remaining polyoxygenated E and F rings of lactonamycinone (2). Key features in the successful route include dihydroxylation of a ketoquinone, the use of a furanone as a lactone surrogate (see 1),
