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136229-46-4

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136229-46-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 136229-46-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,2,2 and 9 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 136229-46:
(8*1)+(7*3)+(6*6)+(5*2)+(4*2)+(3*9)+(2*4)+(1*6)=124
124 % 10 = 4
So 136229-46-4 is a valid CAS Registry Number.

136229-46-4Downstream Products

136229-46-4Relevant articles and documents

Vinylindenes and Some Heteroanalogues in the Diels-Alder Reaction. IX. 3-Vinylbenzofuran and 1,4-Naphthoquinone

Pearson, James R.,Porter, Quentin N.

, p. 907 - 917 (2007/10/02)

3-Vinylbenzofuran and 1,4-naphthoquinone react to give r-5a,6,c-12a,c,12b-tetrahydroanthrabenzofuran-5,13-quinone.This adduct undergoes ring opening to 2-(2-hydroxyphenyl)anthraquinone with base and oxygen, but shows no rearrangement to anthrabenzofuran-5,13-quinone.

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