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136981-75-4

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136981-75-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 136981-75-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,9,8 and 1 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 136981-75:
(8*1)+(7*3)+(6*6)+(5*9)+(4*8)+(3*1)+(2*7)+(1*5)=164
164 % 10 = 4
So 136981-75-4 is a valid CAS Registry Number.

136981-75-4Downstream Products

136981-75-4Relevant articles and documents

Investigations on the Formation of 4-Aminobicyclo[2.2.2]octanones

Seebacher, Werner,Kroepfl, Dietmar,Belaj, Ferdinand,Saf, Robert,Huefner, Antje,Weis, Robert

, p. 676 - 688 (2007/10/03)

Benzylidene acetone reacts with thiocyanates derived from secondary amines in a one-pot reaction to give 4-aminobicyclo[2.2.2]octan-2-ones. The reaction mixture was investigated for the presence of possible intermediates using GC-MS. These intermediates -

Cyclodimerization of α,β-unsaturated ketones catalyzed by lanthanoid tri-2-propoxides

Okano, Tamon,Ohno, Katsutoshi,Kiji, Jitsuo

, p. 1041 - 1042 (2007/10/03)

α,β-unsaturated ketones are cyclodimerized by the catalysis of lanthanoid tri-2-propoxides into substituted cycohexanones in good yields. The catalytic activity of the lanthanoids is fairly superior to those of the sodium or aluminum propoxides.

Michael Addition of Acyclic Lithium 1,3-Dien-2-olates with α,β-Unsaturated Esters, Ketones, and Diesters

Kanemasa, Shuji,Kumegawa, Masahiro,Wada, Eiji,Nomura, Masafumi

, p. 2990 - 3004 (2007/10/02)

The Michael addition of lithium 1,3-dien-2-olates with α,β-unsaturated carbonyl compounds is described.With α,β-unsaturated esters the reaction was reversible even at -78 deg C, while kinetically controlled with α,β-unsaturated ketones or alkylidenemalona

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