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273200-52-5

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273200-52-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 273200-52-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,3,2,0 and 0 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 273200-52:
(8*2)+(7*7)+(6*3)+(5*2)+(4*0)+(3*0)+(2*5)+(1*2)=105
105 % 10 = 5
So 273200-52-5 is a valid CAS Registry Number.

273200-52-5Relevant articles and documents

A new route towards the synthesis of substituted naphthalenes via Friedel-Crafts acylation

Kao, Chai-Lin,Yen, Shu Y.,Chern, Ji-Wang

, p. 2207 - 2210 (2007/10/03)

A novel approach towards the synthesis of substituted naphthalene derivatives is achieved by a treatment of the 4-aryl-4-hydroxy-3-p- toluenesulfonylbutanal ethylene acetals (6a-e) with a catalytic amount of p- toluene sulfonic acid. (C) 2000 Elsevier Science Ltd.

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