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77563-68-9

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77563-68-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77563-68-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,5,6 and 3 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 77563-68:
(7*7)+(6*7)+(5*5)+(4*6)+(3*3)+(2*6)+(1*8)=169
169 % 10 = 9
So 77563-68-9 is a valid CAS Registry Number.

77563-68-9Relevant articles and documents

Three-component reaction between isocyanides, aliphatic amines and elemental sulfur: Preparation of thioureas under mild conditions with complete atom economy

Nguyen, Thanh Binh,Ermolenko, Ludmila,Al-Mourabit, Ali

, p. 3172 - 3179 (2015/01/09)

The reaction of isocyanides with aliphatic amines in the presence of elemental sulfur was found to proceed efficiently at, or near, room temperature to produce thioureas in excellent yields and with complete atom economy.

Influence of Substituents on the Synthesis of Thiazolidinones

Sabu, M.,Garnaik, B. K.,Behera, Rajani K.

, p. 779 - 781 (2007/10/02)

The influence of substituents (subunits) in the synthesis of thiazolidinones by the reaction of unsymmetrical thioureas with monochloroacetic acid in ethanol has been rationalised by the characterisation of the hydrolysis products of the resulting thiazolidinones.The formation of thiol from thiourea, which is the key intermediate in thiazolidinone synthesis, invariably involves the -NH- group adjacent to more electron withdrawing subunits.

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