139302-97-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139302-97-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,3,0 and 2 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 139302-97:
(8*1)+(7*3)+(6*9)+(5*3)+(4*0)+(3*2)+(2*9)+(1*7)=129
129 % 10 = 9
So 139302-97-9 is a valid CAS Registry Number.
139302-97-9Relevant articles and documents
Synthesis of unsaturated [1,2]oxazines by using sigmatropic rearrangements and the ring-closing metathesis reaction
Le Flohic, Alexandre,Meyer, Christophe,Cossy, Janine,Desmurs, Jean-Roger
, p. 8577 - 8580 (2007/10/03)
Various substituted unsaturated [1,2]oxazines have been synthesized by using a [2,3]- or a [3,3]-sigmatropic rearrangement and a ring-closing metathesis reaction as key steps.
