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134919-77-0

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134919-77-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 134919-77-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,9,1 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 134919-77:
(8*1)+(7*3)+(6*4)+(5*9)+(4*1)+(3*9)+(2*7)+(1*7)=150
150 % 10 = 0
So 134919-77-0 is a valid CAS Registry Number.

134919-77-0Downstream Products

134919-77-0Relevant articles and documents

A CONVENIENT, ONE-POT AZULENE SYNTHESIS FROM 2H-CYCLOHEPTAFURAN-2-ONES WITH VINYL ETHER AND ITS ANALOGUES III. ORTHOESTERS AS A REAGENT

Nozoe, Tetsuo,Wakabayashi, Hidetsugu,Shindo, Kimio,Ishikawa, Sumio,Wu, Chi-Phi,Yang, Paw-Wang

, p. 213 - 220 (2007/10/02)

2-Alkoxy and 2,4-dialkoxyazulene derivatives were synthesized in one-pot and in good yields by the reaction of 2H-cycloheptafuran-2-ones with orthoesters on heating either neat or in an aprotic solvent at 160-190 deg C.

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