105447-20-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 105447-20-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,4,4 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 105447-20:
(8*1)+(7*0)+(6*5)+(5*4)+(4*4)+(3*7)+(2*2)+(1*0)=99
99 % 10 = 9
So 105447-20-9 is a valid CAS Registry Number.
105447-20-9Relevant articles and documents
SYNTHETIC STUDIES ON (+)-APLASMOMYCIN. 2. STEREOSELECTIVE SYNTHESIS OF COREY'S KEY INTERMEDIATE, A FORMAL TOTAL SYNTHESIS
Nakata, Tadashi,Saito, Kunio,Oishi, Takeshi
, p. 6345 - 6348 (2007/10/02)
The C-3 - C-11 segment 2 of (+)-aplasmomycin was synthesized stereoselectively starting from (+)-pantolactone (4) and the C-3 - C-17 segment 3 was synthesized via coupling of 1 and 2.