252273-55-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 252273-55-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,2,2,7 and 3 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 252273-55:
(8*2)+(7*5)+(6*2)+(5*2)+(4*7)+(3*3)+(2*5)+(1*5)=125
125 % 10 = 5
So 252273-55-5 is a valid CAS Registry Number.
252273-55-5Relevant articles and documents
Total synthesis of antitumor agents, (+)-goniopypyrone and (+)-7-epi-goniofufurone
Surivet, Jean-Philippe,Vatele, Jean-Michel
, p. 819 - 820 (1997)
Synthesis of enantiopure (+)-7-epi-goniofufurone 1 and (+)-goniopypyrone 2 has been achieved from C-4 carbon chain chiron 3, readily available from (R)-mandelic acid.
