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25388-00-5

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25388-00-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 25388-00-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,3,8 and 8 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 25388-00:
(7*2)+(6*5)+(5*3)+(4*8)+(3*8)+(2*0)+(1*0)=115
115 % 10 = 5
So 25388-00-5 is a valid CAS Registry Number.

25388-00-5Downstream Products

25388-00-5Relevant articles and documents

Tetraarylphosphonium Salt-Catalyzed Synthesis of Oxazolidinones from Isocyanates and Epoxides

Toda, Yasunori,Gomyou, Shuto,Tanaka, Shoya,Komiyama, Yutaka,Kikuchi, Ayaka,Suga, Hiroyuki

supporting information, p. 5786 - 5789 (2017/11/10)

Preparation of a range of oxazolidinones, including enantioenriched N-aryl-substituted oxazolidinones, in which tetraarylphosphonium salts (TAPS) catalyze the [3 + 2] coupling reaction of isocyanates and epoxides effectively, is described. The key finding is a Br?nsted acid/halide ion bifunctional catalyst that can accelerate epoxide ring opening with high regioselectivity. Mechanistic studies disclosed that the ylide generated from TAPS, along with the formation of halohydrins, plays a crucial role in the reaction with isocyanates.

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