81717-81-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81717-81-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,1 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81717-81:
(7*8)+(6*1)+(5*7)+(4*1)+(3*7)+(2*8)+(1*1)=139
139 % 10 = 9
So 81717-81-9 is a valid CAS Registry Number.
81717-81-9Relevant articles and documents
Synthesis of Isomeric 1,3,5,8-Undecatetraenes
Marner, Franz-Josef,Boland, Wilhelm,Jaenicke, Lothar
, p. 579 - 584 (2007/10/02)
(3E,5Z,8Z)-1,3,5,8-Undecatetraene (1a) is the smelling principle of the gametes of the brown alga Spermatochnus paradoxus.The synthesis of the isomeric 1,3,5,8-undecatetraenes 1a - c and their spectral properties are described.
