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183509-18-4

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183509-18-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 183509-18-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,3,5,0 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 183509-18:
(8*1)+(7*8)+(6*3)+(5*5)+(4*0)+(3*9)+(2*1)+(1*8)=144
144 % 10 = 4
So 183509-18-4 is a valid CAS Registry Number.

183509-18-4Relevant articles and documents

First practical asymmetric synthesis of a new tetrasubstituted tetrahydrofuran, (-)-goniothalesdiol

Yoda, Hidemi,Nakaseko, Yuka,Takabe, Kunihiko

, p. 1532 - 1534 (2002)

An efficient and practical strategy has been developed for the construction of the antipode of 3,4-dihydroxy-2,5-disubstituted tetrahydrofuran, goniothalesdiol, isolated from the bark of the Malaysian tree. The synthetic process is based on the convenient manipulation via Lewis acid-induced deoxygenation of the highly functionalized lactone derived from D-glucuronolactone.

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