137517-19-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137517-19-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,5,1 and 7 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 137517-19:
(8*1)+(7*3)+(6*7)+(5*5)+(4*1)+(3*7)+(2*1)+(1*9)=132
132 % 10 = 2
So 137517-19-2 is a valid CAS Registry Number.
137517-19-2Relevant articles and documents
Synthesis and Properties of Substituted 1,6-Dioxapyrene Donors
Christensen, J. B.,Johannsen, I.,Bechgaard, K.
, p. 7055 - 7058 (1991)
The synthesis of substituted 1,6-dioxapyrenes, 2b-g, from 2,6-dipropyl-1,5-naphthalenediol (7a) or 2,6-dimethyl-1,5-naphthalenediol (7b) is described.Diol 7a was prepared by Claisen allylic rearrangement followed by reduction, and 7b was prepared by Manni
