199661-68-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199661-68-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,6,6 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 199661-68:
(8*1)+(7*9)+(6*9)+(5*6)+(4*6)+(3*1)+(2*6)+(1*8)=202
202 % 10 = 2
So 199661-68-2 is a valid CAS Registry Number.
199661-68-2Relevant articles and documents
Total synthesis of zoanthamine alkaloids, part 2. Construction of the C1-C5, C6-C10, and C11-C24 fragments of zoanthamine
Tanner, David,Tedenborg, Lars,Somfai, Peter
, p. 1217 - 1223 (2007/10/03)
This paper describes the construction of three key intermediates 11, 15 and 23 for a projected total synthesis of the marine alkaloid zoanthamine. These building blocks, corresponding to the C1-C5, C6-C10, and C