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300661-18-1

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300661-18-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 300661-18-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,0,6,6 and 1 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 300661-18:
(8*3)+(7*0)+(6*0)+(5*6)+(4*6)+(3*1)+(2*1)+(1*8)=91
91 % 10 = 1
So 300661-18-1 is a valid CAS Registry Number.

300661-18-1Relevant articles and documents

Pigments of Fungi. LIX - Synthesis of (1S,3S)- and (1R,3R)-austrocortilutein and (1S,3S)-austrocortirubin from citramalic acid

Gill, Melvyn,Harte, Michael F.,Ten, Abilio

, p. 245 - 256 (2007/10/03)

The naturally occurring tetrahydroanthraquinone (1S,3S)-austrocortilutein (1) is synthesized for the first time in enantiomerically pure form by Diels-Alder cycloaddition between the functionalized butadiene derivative (8) and the chiral 1,3-dihydroxy-1,2,3,4-tetrahydro-5,8-naphthoquinone (9), the latter being derived from (R)-citramalic acid (3). The natural products (1S,3S)-austrocortirubin (2) and (1R,3R)-austrocortilutein (5) were also prepared for the first time by using the same strategy. CSIRO 2000.

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