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133870-20-9

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133870-20-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133870-20-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,8,7 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 133870-20:
(8*1)+(7*3)+(6*3)+(5*8)+(4*7)+(3*0)+(2*2)+(1*0)=119
119 % 10 = 9
So 133870-20-9 is a valid CAS Registry Number.

133870-20-9Downstream Products

133870-20-9Relevant articles and documents

General approach to halogenated tetrahydrofuran natural products from red algae of the genus Laurencia. Total synthesis of (±)-trans-kumausyne and demonstration of an asymmetric synthesis strategy

Brown, Mark J.,Harrison, Timothy,Overman, Larry E.

, p. 5378 - 5384 (1991)

A general strategy for the synthesis of C15 halogenated tetrahydrofuranoid lipids from red algae of the genus Laurencia has been developed. The central step is the convenient formation of hydrobenzofuranone (±)-5 on a large scale, and with comp

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