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108054-70-2

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108054-70-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 108054-70-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,8,0,5 and 4 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 108054-70:
(8*1)+(7*0)+(6*8)+(5*0)+(4*5)+(3*4)+(2*7)+(1*0)=102
102 % 10 = 2
So 108054-70-2 is a valid CAS Registry Number.

108054-70-2Relevant articles and documents

Synthesis of Diethyl Alkoxymethylphosphonates via Lewis Acid Promoted Regiospecific Cleavage of Alkoxy-4-Chlorophenoxymethanes

Wilson, John R. H.

, p. 1065 - 1068 (2007/10/02)

Alkoxy-4-chlorophenoxymethanes, readily prepared from 1-chloro-4-chloromethoxybenzene and sodium alkoxide, generate alkoxymethyltriethoxyphosphonium ions in a regiospecific reaction with triethyl phosphite and titanium tetrachloride or boron trifluoride.Precise reaction conditions are necessary since the phosphonium ions can undergo disproportionation.Subsequent addition of water gives diethyl alkoxymethylphosphonates; if disproportionation has been permitted these contain 4-chlorophenyl ethyl alkoxymethylphosphonates.Under the preferred conditions (titanium tetrachloride, -78 deg C, 15 min, dichloromethane) yields of ca. 80percent of diethylalkoxymethylphosphonates have been obtained from primary, secondary, tertiary, and allylic alcohols.

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