3402-61-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3402-61-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,4,0 and 2 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 3402-61:
(6*3)+(5*4)+(4*0)+(3*2)+(2*6)+(1*1)=57
57 % 10 = 7
So 3402-61-7 is a valid CAS Registry Number.
3402-61-7Relevant articles and documents
Mechanism of Wittig reaction with cyclic anhydrides
Kayser, Margaret M.,Hatt, Krista L.,Hooper, Donald L.
, p. 1985 - 1996 (2007/10/02)
The reactions of stabilized phosphoranes with cyclic anhydrides give enol-lactones as final products.The inital condensation, however, leads to the formation of acyclic adducts that are observable by NMR, can be easily trapped, and, in some cases, can be
