251998-87-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 251998-87-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,9,9 and 8 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 251998-87:
(8*2)+(7*5)+(6*1)+(5*9)+(4*9)+(3*8)+(2*8)+(1*7)=185
185 % 10 = 5
So 251998-87-5 is a valid CAS Registry Number.
251998-87-5Relevant articles and documents
Convergent synthesis of (+)-muconin
Yang, Wen-Qian,Kitahara, Takeshi
, p. 7827 - 7830 (1999)
An efficient total synthesis of the tetrahydropyran-bearing acetogenin muconin 1 is described. Palladium(0)-mediated crossed diyne coupling and the use of only D-glutamic acid as the origin of all absolute stereochemistry highlight this flexible approach that sets the stage for access to structural analogs for further study.
