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137588-41-1

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137588-41-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137588-41-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,5,8 and 8 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 137588-41:
(8*1)+(7*3)+(6*7)+(5*5)+(4*8)+(3*8)+(2*4)+(1*1)=161
161 % 10 = 1
So 137588-41-1 is a valid CAS Registry Number.

137588-41-1Downstream Products

137588-41-1Relevant articles and documents

Reactions of Alkylbiguanides with Benzoin at the pH of the Biguanide Bases

Schramm, H. W.,Schubert-Zsilavecz, M.,Saracoglu, A. I.,Kratky, Ch.

, p. 1063 - 1074 (2007/10/02)

Alkylbiguanides 2a-e react with benzoin (1) at the pH of the base in different ways. 1 undergoes in presence of 2a, c oxidation to benzoic acid which reacts with the bases 2a, c to yield 4-phenyl-1,3,5-triazinamines 3c, 4c; in presence of 2b 1 is transformed to benzil, which reacts with 2b under rearrangement to yield 1-(4-oxo-5,5-diphenyl-2-imidazolin-2-yl)-3,3-dimethylguanidine (5b).However, the cycloalkylbiguanides 2d, e react in presence of nitrogen as well as oxygen with 1 to yield piperidine-1- (7d), resp. morpholine-4- (7e).The structure of 7e was established by means of an X-ray structure analysis.All proton- and carbon resonances were assigned on the basis of 2-dimensional NMR data.Keywords: Benzoin, reaction with alkylbiguanides; Imidazoles , 1-(4-oxo-5,5-diphenyl-2-imidazolin-2-yl)-3,3,-dimethyl-guanidine>; Triazines ; NMR; X-ray analysis.

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