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90558-08-0

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90558-08-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90558-08-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,5,5 and 8 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 90558-08:
(7*9)+(6*0)+(5*5)+(4*5)+(3*8)+(2*0)+(1*8)=140
140 % 10 = 0
So 90558-08-0 is a valid CAS Registry Number.

90558-08-0Upstream product

90558-08-0Relevant articles and documents

REACTIONS DES METHYLAZIDE ET PHENYLAZIDE AVEC QUELQUES ALCYNES ET OLEFINES α-NITREES. SYNTHESE REGIOSPECIFIQUE DES 1,2,3 TRIAZOLES

Piet, J. C.,Hetet, G. Le,Cailleux, P.,Benhaoua, H.,Carrie, R.

, p. 33 - 44 (2007/10/03)

The reactions of alkynes and α-nitro-olefines with methylazide and phenylazide was studied.In contrast to known reactions with alkynes which are non-regioselective, methylazide and phenylazide react regiospecifically with α-nitro-olefines and give only one type of triazole after elimination of HNO2.These reactions are very useful synthetic approaches to 1,2,3 triazoles.

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