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81893-41-6

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81893-41-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81893-41-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,9 and 3 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81893-41:
(7*8)+(6*1)+(5*8)+(4*9)+(3*3)+(2*4)+(1*1)=156
156 % 10 = 6
So 81893-41-6 is a valid CAS Registry Number.

81893-41-6Relevant articles and documents

Process for making terpene esters

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Page/Page column 6, (2008/06/13)

A process for making terpene esters is disclosed. Reaction of a terpene alcohol with acetic anhydride in the presence of a high-boiling amine provides a terpene ester. Acetic acid, which is distilled from the reaction mixture as it forms can be recovered. The terpene ester is distilled from the high-boiling amine to provide a product that is substantially free of nitrogen-containing impurities. The reaction mixture can be reused for subsequent acylations. The simple, economical process gives high-quality terpene esters while avoiding waste-disposal issues of other common acylation procedures.

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