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306326-67-0

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306326-67-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 306326-67-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,6,3,2 and 6 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 306326-67:
(8*3)+(7*0)+(6*6)+(5*3)+(4*2)+(3*6)+(2*6)+(1*7)=120
120 % 10 = 0
So 306326-67-0 is a valid CAS Registry Number.

306326-67-0Relevant articles and documents

Nazarov cyclization of 4-cycloalkylidene-5-(trimethylsilyl)pent-1-en-3-one derivatives. Synthesis of spiro[4.5]decane, Spiro[4.4]nonane, and Their derivatives

Kuroda,Koshio,Koito,Sumiya,Murase,Hirono

, p. 6441 - 6455 (2007/10/03)

Spiro[4.5]decane and spiro[4.4]nonane ring systems were synthesized by FeCl3-induced Nazarov cyclization of α-(trimethylsilylmethyl)divinyl ketone derivatives. It was found that the double bond position of the product is controlled by the presence/absence of α'-substituent, while trimethylsilyl group is essential to obtain the products in good yields. Spiro[4.4]nonanes having exo-methylene group underwent rearrangement to bicyclo[4.3.0]nonanes. (C) 2000 Elsevier Science Ltd.

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