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105419-03-2

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105419-03-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 105419-03-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,4,1 and 9 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 105419-03:
(8*1)+(7*0)+(6*5)+(5*4)+(4*1)+(3*9)+(2*0)+(1*3)=92
92 % 10 = 2
So 105419-03-2 is a valid CAS Registry Number.

105419-03-2Downstream Products

105419-03-2Relevant articles and documents

Synthesis of 3- and 4-(ω-Phenylalkyl)catechols, the Sap Exuded from a Burmese Lac Tree, Melanorrhoea Usitate

Miyakoshi, Tetsuo,Du, Yumin,Kumanotani, Ju

, p. 1054 - 1056 (2007/10/02)

The presence of 3- and 4-(ω-phenylalkyl)catechols in Burmese lac has been confirmed by their synthesis. 3-(ω-Phenylalkyl)veratroles were synthesized by alkylation of ω-phenylalkyl bromide with aryl lithium derived from veratrole. 4-(ω-phenylalkyl)veratroles were similarly obtained from w-phenylalkyl bromide and 4-bromoveratrole.Demethylation of 3- and 4-(ω-phenylalkyl)veratroles with boron tribromide gave the corresponding catechols in good yields.

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