191660-22-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 191660-22-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,6,6 and 0 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 191660-22:
(8*1)+(7*9)+(6*1)+(5*6)+(4*6)+(3*0)+(2*2)+(1*2)=137
137 % 10 = 7
So 191660-22-7 is a valid CAS Registry Number.
191660-22-7Relevant academic research and scientific papers
Toward a total synthesis of an aglycone of spiramycine; two complementary accesses to a C-5/C-9 fragment
Oddon,Uguen
, p. 4411 - 4414 (2007/10/03)
Both homochiral acetates 4d and 5f, which were obtained by lipase-catalysed acetylation of either the tetraol 4a or the diol 5e, respectively, have been converted stereoconvergently into a C-5/C-9 fragment of the title antibiotic.
