138366-21-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138366-21-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,3,6 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 138366-21:
(8*1)+(7*3)+(6*8)+(5*3)+(4*6)+(3*6)+(2*2)+(1*1)=139
139 % 10 = 9
So 138366-21-9 is a valid CAS Registry Number.
138366-21-9Relevant articles and documents
TOTAL SYNTHESIS OF (+/-)-HELMINTHOSPORAL VIA FRAGMENTATION REACTION
Nagaoka, Hiroto,Baba, Atsuo,Yamada, Yasuji
, p. 6741 - 6744 (2007/10/02)
A new route for the total synthesis of (+/-)-helminthosporal ((+/-)-1), involving fragmentation reaction of tricyclo2,7>octane derivative 5 to give bicyclooctane derivative 6 as a crucial step, is described.