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91904-44-8

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91904-44-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91904-44-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,9,0 and 4 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 91904-44:
(7*9)+(6*1)+(5*9)+(4*0)+(3*4)+(2*4)+(1*4)=138
138 % 10 = 8
So 91904-44-8 is a valid CAS Registry Number.

91904-44-8Downstream Products

91904-44-8Relevant articles and documents

Amines and ammonium compounds. CXCI. The Stevens rearrangement with the participation of the N,N-dimethylcarbamoylmethyl group

Kocharyan, S. T.,Voskanyan, V. S.,Razina, T. L.,Babayan, A. T.

, p. 1721 - 1724 (2007/10/02)

Under the influence of powdered potassium hydroxide in benzene ammonium salts containing a group of the allyl or propargyl type in addition to an N,N-dimethylcarbamoylmethyl group enter smoothly into a Stevens 3,2-rearrangement with the formation of the N,N-dimethylamides of 2-dimethylamino-4-pentenoic and 2-dimethylamino-3,4-pentadienoic acids respectively.The salt, which contains a benzyl group as migrating group, forms a mixture of products from the Stevens and Sommelet rearrangements.The possibility of rearrangement under the influence of sodium in DMSO was demonstrated.

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