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117174-81-9

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117174-81-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 117174-81-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,1,7 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 117174-81:
(8*1)+(7*1)+(6*7)+(5*1)+(4*7)+(3*4)+(2*8)+(1*1)=119
119 % 10 = 9
So 117174-81-9 is a valid CAS Registry Number.

117174-81-9Relevant articles and documents

Improved Procedures for the Preparation of Cycloalkyl-, Arylalkyl-, and Arylthioureas

Rasmussen, C. R.,Villani, F. J.,Weaner, L. E.,Reynolds, B. E.,Hood, A. R.,et al.

, p. 456 - 459 (2007/10/02)

An improved procedure for the preparation of arylthioureas consists of the reaction of benzoyl isothiocyanate with anilines in acetone and debenzoylation of the resultant N-aryl-N'-benzoylthioureas with 5percent aqueous sodium hydroxide.Bicycloalkylthioureas and N-(arylalkyl)thioureas (e.g. 9H-9-fluorenylthiourea) are directly prepared from the corresponding isothiocyanates and ammonia.

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