637773-08-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 637773-08-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,7,7,7 and 3 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 637773-08:
(8*6)+(7*3)+(6*7)+(5*7)+(4*7)+(3*3)+(2*0)+(1*8)=191
191 % 10 = 1
So 637773-08-1 is a valid CAS Registry Number.
637773-08-1Relevant articles and documents
An efficient access to the optically active manzamine tetracyclic ring system
Uchida, Hideharu,Nishida, Atsushi,Nakagawa, Masako
, p. 113 - 116 (2007/10/03)
The highly stereoselective synthesis of the optically active tetracyclic core 2 of Manzamine A 1 was achieved via the Diels-Alder reaction of dihydropyridinone 12b, derived from L-serine, with siloxydienes, followed by sequential new and conventional pathways.
