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87339-73-9

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87339-73-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87339-73-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,3,3 and 9 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 87339-73:
(7*8)+(6*7)+(5*3)+(4*3)+(3*9)+(2*7)+(1*3)=169
169 % 10 = 9
So 87339-73-9 is a valid CAS Registry Number.

87339-73-9Downstream Products

87339-73-9Relevant articles and documents

Prenylation of Isocaeroin: Synthesis of Vismiaphenone-C

Pathak, V. P.,Saini, T. R.,Khanna, R.N.

, p. 571 - 572 (2007/10/02)

2,6-Dihydroxy-4-methoxybenzophenone on prenylation with 2-methylbut-3-en-2-ol in the presence of BF3-etherate gives a dichroman , vismiaphenone-C (1), 8-benzoyl-7-hydroxy-5-methoxy-2,2-dimethyl-3,4-dihydro-2H-1-benzopyran (6) and an oil which could not be characterised. 2,4,6-Trihydroxy-3,5-diprenylbenzophenone (4) on partial methylation gives 6-hydroxy-2,4-dimethoxy-3,5-diprenylbenzophenone (3), 1 and 2,4-dihydroxy-6-methoxy-3,5-diprenylbenzophenone (2).

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