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1,11-bis-(o-ethynylphenyl)-4-methylundeca-1,3,6,8,10-pentaen-5-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

74998-27-9

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74998-27-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74998-27-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,9,9 and 8 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 74998-27:
(7*7)+(6*4)+(5*9)+(4*9)+(3*8)+(2*2)+(1*7)=189
189 % 10 = 9
So 74998-27-9 is a valid CAS Registry Number.

74998-27-9Downstream Products

74998-27-9Relevant academic research and scientific papers

Syntheses and Properties of Trimethyltetrahydroannulenones and the Benzannulated Derivatives

Ojima, Juro,Wada, Kazuyo,Nakagawa, Yukiko,Terasaki, Masayuki,Juni, Yasushi

, p. 31 - 42 (2007/10/02)

Syntheses of 2,7,12- (5) and 7,12,19-trimethyl-8,9,10,11-tetrahydrocyclononadecenone (6), 17-methyl-18,19,20,21-tetrahydrobenzocyclononadecen-11-one (7), and 8-methyl-20,21,22,23-tetradehydrodibenzocyclononadecen-9-one (8) are described.The influence

SYNTHESES AND PROPERTIES OF TRIMETHYLBISDEHYDROANNULENONES AND THE BENZANNELATED DERIVATIVES

Ojima, Juro,Wada, Kazuyo,Nakagawa, Yukiko,Terasaki, Masayuki,Juni, Yasushi

, p. 225 - 228 (2007/10/02)

Syntheses of 2,7,12-trimethyl- (5), 7,12,19-trimethyl-8-10-bisdehydro- (6), 14-methylbenzo-10,12-bisdehydro- (7), and 2-methyldibenzo-8,10-bisdehydro-annulenone (8) are described.The effects of α-methyl substitution and benzannelation for the

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