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186422-53-7

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186422-53-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 186422-53-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,6,4,2 and 2 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 186422-53:
(8*1)+(7*8)+(6*6)+(5*4)+(4*2)+(3*2)+(2*5)+(1*3)=147
147 % 10 = 7
So 186422-53-7 is a valid CAS Registry Number.

186422-53-7Relevant articles and documents

Facile synthesis of (+)- and (-)-Geissman-Waiss lactones

Kouyama, Takafumi,Matsunaga, Hirofumi,Ishizuka, Tadao,Kunieda, Takehisa

, p. 479 - 486 (2007/10/03)

(+)- and (-)- Geissman-Waiss lactones (1), were prepared from the readily accessible (4R, 5R)- and (4S, 5S)-5-allyl-4-methoxy-2-oxazolidinones [(+)- and (-)-7], respectively, in a highly stereocontrolled manner from the previously reported building block, 3-[(1S)-2-exo-alkoxy-1-apocamphanecarbonyl]-2-oxazolones (4).

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