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136334-42-4

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136334-42-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 136334-42-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,3,3 and 4 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 136334-42:
(8*1)+(7*3)+(6*6)+(5*3)+(4*3)+(3*4)+(2*4)+(1*2)=114
114 % 10 = 4
So 136334-42-4 is a valid CAS Registry Number.

136334-42-4Relevant articles and documents

Synthesis of 1'-Substituted and 1',3'-Disubstituted (+/-)-2R*,11bS*-9,10-Dimethoxy-1,3,4,6,7,11b-Hexahydrospiroquinolizin-2,5'-imidazolidine>-2',4'-diones

Menendez, J. Carlos,Soellhuber, Monica M.

, p. 923 - 932 (2007/10/02)

The results of the reaction between (+/-)-2R*,11bS*-2-alkyl(aryl)amino-1,3,4,6,7,11b-hexahydrobenzoquinolizine-2-carbonitriles 2 and isocyanates under a variety of experimental conditions are discussed.The ureides 3 and iminohydantoins 4 thus obtained were used to prepare N3-monosubstituted and N1,N3-disubstituted derivatives of the (+/-)-2R*,11bS*-9,10-dimethoxy-1,3,4,6,7,11b-hexahydrospiroquinolizin-2,5'-imidazolidine>-2',4'-dione system 1.The stereochemistry of these compounds is discussed, on the basis of spectroscopic evidence and study of their chemical reactivity.

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