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136661-37-5

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136661-37-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 136661-37-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,6,6 and 1 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 136661-37:
(8*1)+(7*3)+(6*6)+(5*6)+(4*6)+(3*1)+(2*3)+(1*7)=135
135 % 10 = 5
So 136661-37-5 is a valid CAS Registry Number.

136661-37-5Relevant articles and documents

TRANSFORMATIONS OF 1,1,1-TRICHLORO-2,2-BIS(4-CHLOROPHENYL)ETHANE, 4,4'-DICHLOROBENZOPHENONE, AND THEIR NITRO DERIVATIVES IN A SODIUM HYDROXIDE-AMIDE SOLVENT MEDIUM

Sibrikov, S. G.,Kazin, V. N.,Kopeikin, V. V.,Mironov, G. S.,Orlova, T. N.

, p. 325 - 327 (2007/10/02)

The reaction of 1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane with alkali in an amide solvent leads to dehydrochlorination of the substrate.In 1,1,1-trichloro-2,2-bis(3-nitro-4-chlorophenyl)ethane under the same conditions substitution of the chlorine atoms in the bridging group by dimethylamino groups, formed as a result of hydrolysis of the solvent, occurs after dehydrochlorination.In 1,1,1-trichloro-2,2-bis(3,5-dinitro-4-chlorophenyl)ethane the chlorine atoms of benzene ring are substituted by dimethylamino groups.In the presence of CuCl 4,4'-dichlorobenzophenone is converted into 4,4'-bis(dimethylamino)benzophenone. 3,3'-Dinitro-4,4'-dichlorobenzophenone reacts with the sodium hydroxide-amide solvent system with the formation of 3,3'-dinitro-4,4'-bis(dimethylamino)-benzophenone and 3,3'-dinitro-4-hydroxy-4'-dimethylaminobenzophenone, the ratio of which is determined by the reaction temperature.

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