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92631-27-1

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92631-27-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 92631-27-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,2,6,3 and 1 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 92631-27:
(7*9)+(6*2)+(5*6)+(4*3)+(3*1)+(2*2)+(1*7)=131
131 % 10 = 1
So 92631-27-1 is a valid CAS Registry Number.

92631-27-1Relevant articles and documents

Synthetic Studies on Aromatic Sesquiterpenoids: Synthesis of Curcumene Ether by Olefin Cyclisation

Kametani, Tetsuji,Kawamura, Kuniaki,Tsubuki, Masayoshi,Honda, Toshio

, p. 1305 - 1310 (2007/10/02)

The acid-catalysed cyclisation of the olefinic β-hydroxy sulphides (15a) and (15b) gave 3-phenylthiocurcumene ether as a diastereoisomeric mixture together with 5,5-dimethyl-4-phenylthio-1-p-tolylcyclohex-1-ene (16) and 2-methyl-3-(1-methyl-1-phenylthioethyl)-2-p-tolylcyclobutan-1-ol (19).The diastereoisomers (17) and (18) were converted into curcumene ether (24).Treatment of the silyl enol ether (7) with benzenesulphenyl chloride yielded 5-phenylthiomethyl-2-tetrahydrofuran (8) and 5-chloro-1,6-bis(phenylthio)-1-p-tolylhexan-2-one (9). 1-p-Tolylhexane-2,5-dione (10) was also synthesised from (5) employing a palladium-catalysed oxidation, and this result constitutes a formal total synthesis of cuparene (11).

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