140902-76-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 140902-76-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,9,0 and 2 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 140902-76:
(8*1)+(7*4)+(6*0)+(5*9)+(4*0)+(3*2)+(2*7)+(1*6)=107
107 % 10 = 7
So 140902-76-7 is a valid CAS Registry Number.
140902-76-7Relevant articles and documents
The total synthesis of swinholide A. Part 2: A stereocontrolled synthesis of a C1-C15 segment
Paterson,Smith,Ward
, p. 9413 - 9436 (1995)
The C1-C15 segment 3 of swinholide A was prepared in 10 steps (14% yield) from the methyl ketone 13. Key steps include (i) the asymmetric aldol reaction, 13 → 35, followed by cyclisation to give the dihydropyrone 36, (ii) the Ferrier
