107642-57-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 107642-57-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,7,6,4 and 2 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 107642-57:
(8*1)+(7*0)+(6*7)+(5*6)+(4*4)+(3*2)+(2*5)+(1*7)=119
119 % 10 = 9
So 107642-57-9 is a valid CAS Registry Number.
InChI:InChI=1/C13H16O4/c1-5-17-13(15)11(14)10-6-8(2)12(16-4)9(3)7-10/h6-7H,5H2,1-4H3
107642-57-9Relevant articles and documents
SIGMATROPIC REARRANGEMENT OF ARYLHYDRAZONES FOLLOWED BY 1,2-SHIFT OF AN ARYL GROUP. VII
Sannicolo, Franco
, p. 91 - 96 (2007/10/02)
Arylhydrazones of ethyl 4-methoxy-3,5-dimethylphenylglyoxylate and 4-methoxy-3,5-dimethylacetophenone rearrange in hot polyphosphoric acid to give biphenyl derivatives arising from a sigmatropic rearrangement followed by an aryl group 1,2-shift.Stru