116269-57-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 116269-57-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,2,6 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 116269-57:
(8*1)+(7*1)+(6*6)+(5*2)+(4*6)+(3*9)+(2*5)+(1*7)=129
129 % 10 = 9
So 116269-57-9 is a valid CAS Registry Number.
116269-57-9Relevant academic research and scientific papers
SYNTHESIS OF 2-PHENYL-2,3,4,5-TETRAHYDRO-1-BENZOXEPIN-5-ONES
Tatsuoka, Toshio,Imao, Kayoko,Suzuki, Kenji,Shibata, Makoto,Satoh, Fumio,et al.
, p. 749 - 752 (2007/10/02)
A series of 2-phenyl-2,3,4,5-tetrahydro-1-benzoxepin-5-ones were synthesized by 2 steps from flavones through 3,4-benzo-5-oxo-2-oxabicycloheptanes.
