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99987-73-2

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99987-73-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99987-73-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,9,8 and 7 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 99987-73:
(7*9)+(6*9)+(5*9)+(4*8)+(3*7)+(2*7)+(1*3)=232
232 % 10 = 2
So 99987-73-2 is a valid CAS Registry Number.

99987-73-2Downstream Products

99987-73-2Relevant articles and documents

Ph3P/I2-mediated synthesis of N,N′,N″-substituted guanidines and 2-iminoimidazolin-4-ones from aryl isothiocyanates

Wangngae, Sirilak,Pattarawarapan, Mookda,Phakhodee, Wong

, p. 10331 - 10340 (2017)

A convenient one-pot procedure for the synthesis of acyclic and cyclic guanidines mediated by the Ph3P/I2 system is described. Sequential condensation of aryl isothiocyanates with amines followed by dehydrosulfurization and guanylation could lead to both symmetric and unsymmetric N,N′,N″-substituted derivatives. Through a tandem guanylation-cyclization, a series of 2-iminoimidazolin-4-ones could also be prepared in good yields from the reaction of aryl isothiocyanates with amino acid methyl esters.

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