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90920-91-5

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90920-91-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90920-91-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,9,2 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 90920-91:
(7*9)+(6*0)+(5*9)+(4*2)+(3*0)+(2*9)+(1*1)=135
135 % 10 = 5
So 90920-91-5 is a valid CAS Registry Number.

90920-91-5Downstream Products

90920-91-5Relevant articles and documents

Synthesis and Reactivity of 4-Acyl-5-hydroxytriazolines Resulting from Thermal Reaction of Aryl and Tosyl Azides with 2-Substituted Indane-1,3-diones

Benati, Luisa,Montevecchi, Pier Carlo,Spagnolo, Piero,Foresti, Elisabetta

, p. 2845 - 2850 (2007/10/02)

Reaction of aryl azides 1 with 2-methylindane-1,3-dione 3 in HMPA at 55 deg C results in the formation of fairly stable tricyclic 4-acyl-5-hydroxytriazolines 6 in yields greatly decreasing with decreasing electrophilic character of the aryl azide reactant

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