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81764-12-7

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81764-12-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81764-12-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,6 and 4 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 81764-12:
(7*8)+(6*1)+(5*7)+(4*6)+(3*4)+(2*1)+(1*2)=137
137 % 10 = 7
So 81764-12-7 is a valid CAS Registry Number.

81764-12-7Relevant articles and documents

Reactions of 1-Methyl-4-t-butylcyclohexene and 1-Methylcyclohexene with Thallium(I) Acetate-Iodine

Cambie, Richard C.,Hume, Bruce A.,Rutledge, Peter S.,Woodgate, Paul D.

, p. 413 - 419 (2007/10/02)

Treatment of 1-methyl-4-t-butylcyclohexene (2) with thallium(I)acetate-iodine in wet acetic acid at 90 deg C gives a complex mixture of products, which differs from that obtained from a Woodward reaction with silver(I) acetate followed by hydrolysis and which includes the unexpected hydroxy-iodoacetate (25).At 20 deg C the thallium(I)-mediated reaction gives a mixture of regioisomeric iodo-acetates.A re-investigation of the reaction of thallium(I) acetate-iodine with 1-methylcyclohexene (1) at 20 deg C has shown that this is not highly regioselective as reported earlier.The actions of KOAc-I2-18-crown-6 and iodine(III) triacetate in acetic acid on the alkenes (1) and (2), and of I2-H2O in tetramethylene sulphone-chloroform on the alkene (2) are reported.

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