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112639-25-5

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112639-25-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 112639-25-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,2,6,3 and 9 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 112639-25:
(8*1)+(7*1)+(6*2)+(5*6)+(4*3)+(3*9)+(2*2)+(1*5)=105
105 % 10 = 5
So 112639-25-5 is a valid CAS Registry Number.

112639-25-5Downstream Products

112639-25-5Relevant articles and documents

Synthesis of Biphenyls by Acid-Catalyzed Condensation of 1-Oxaspirodeca-6,9-diene-2,8-dinoe with Phenols or Phenol-ethers

Takeya, Tetsuya,Okubo, Toruo,Tobinaga, Seisho

, p. 1762 - 1769 (2007/10/02)

Acid catalyzed condensation reaction reactions of 1-oxaspirodeca-6,9-diene-2,8-dione (1) (quinolactone) with phenols and phenol-ethers 2a-i to yield biphenyls 3a-i and 4a-f were found to proceed by an elimination-addition mechanism.Keywords-- condensation; acid catalysis; biphenyl; quinol-lactone; phenol; phenol-ether; elimination-addition mechanism

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