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223676-66-2

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223676-66-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 223676-66-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,6,7 and 6 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 223676-66:
(8*2)+(7*2)+(6*3)+(5*6)+(4*7)+(3*6)+(2*6)+(1*6)=142
142 % 10 = 2
So 223676-66-2 is a valid CAS Registry Number.

223676-66-2Downstream Products

223676-66-2Relevant articles and documents

Synthesis of longithorone B, a sixteen-membered farnesylated p- benzoquinone

Kato,Nagae,Hoshikawa

, p. 1941 - 1944 (2007/10/03)

The intramolecular coupling reactions at the C-1 position of the 10Z- farnesyl moiety appended at the 2'-position of 4'-methoxy phenol derivatives were examined with the aid of Hf(OTf)4 and LiClO4. When the phenol was protected with a TBDMS group, meta coupling predominated while para coupling occurred efficiently when protected with a pivaloyl group. The para-coupled product was transformed to longithorone B, recently isolated from a tunicate.

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