Cas 20502-63-0,dimethyl hydrogen phosphite

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Check Digit Verification of cas no

The CAS Registry Mumber 20502-63-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,5,0 and 2 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 20502-63:
(7*2)+(6*0)+(5*5)+(4*0)+(3*2)+(2*6)+(1*3)=60
60 % 10 = 0
So 20502-63-0 is a valid CAS Registry Number.

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20502-63-0Relevant articles and documents

Reactions of Phosphites with 1,4-Benzoquinone Monoimines

Boulos, Leila Sadek,Hennawy, Ibtisam Tadros,Arsanious, Mona Hazkial Nasr

, p. 351 - 354 (2007/10/02)

Trimethyl phosphite (2a) reacts with N-(phenylsulfonyl)-1,4-benzoquinone monoimine (1a) to give the respective phosphonate 3c, phosphates 3d, 3e and the alkylated products 3a and 3b.The reaction of triethyl phosphite (2b) with the same quinone imine 1a yi

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20502-63-0