104337-51-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 104337-51-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,3,3 and 7 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 104337-51:
(8*1)+(7*0)+(6*4)+(5*3)+(4*3)+(3*7)+(2*5)+(1*1)=91
91 % 10 = 1
So 104337-51-1 is a valid CAS Registry Number.
104337-51-1Relevant articles and documents
-Cycloadditions with 5-Ethenyl-3,4-dihydro-2H-pyran and 5-Ethenyl-2,3-dihydro-1,4-dioxine
Potthoff, Birgit,Breitmaier, Eberhard
, p. 3204 - 3207 (2007/10/02)
5-Ethenyl-3,4-dihydro-2H-pyran (2a) and 5-ethenyl-2,3-dihydro-1,4-dioxine (2b) as heterocyclic donor-activated 1,3-dienes are prepared by Wittig alkenylation of the aldehydes 1a and 1b. -Cycloadditions with dienophiles such as tetracyanoethene, β-n