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91280-38-5

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91280-38-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91280-38-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,2,8 and 0 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 91280-38:
(7*9)+(6*1)+(5*2)+(4*8)+(3*0)+(2*3)+(1*8)=125
125 % 10 = 5
So 91280-38-5 is a valid CAS Registry Number.

91280-38-5Downstream Products

91280-38-5Relevant articles and documents

IMPROVED METHOD OF OBTAINING PIPERITONE

Bazyl'chik, V. V.,Overchuk, T. N.

, p. 292 - 295 (2007/10/02)

A new convenient variant of the reduction of thymol methyl ether by lithium and isopropanol in the presence of ethylenediamine at 80-85 deg C and a molar equivalent ratio of ether to alcohol to amine to metal of 1:(8-12):(2.5-3):(4-6) has been developed.The proposed method permits the yield of piperitone to be doubled in comparison with known methods.

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