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108438-83-1

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108438-83-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 108438-83-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,8,4,3 and 8 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 108438-83:
(8*1)+(7*0)+(6*8)+(5*4)+(4*3)+(3*8)+(2*8)+(1*3)=131
131 % 10 = 1
So 108438-83-1 is a valid CAS Registry Number.

108438-83-1Downstream Products

108438-83-1Relevant articles and documents

The Chapman rearrangement in a continuous-flow microreactor

Fang, Jingjie,Ke, Miaolin,Huang, Guanxin,Tao, Yuan,Cheng, Dang,Chen, Fen-Er

, p. 9270 - 9280 (2019/03/28)

The Chapman rearrangement is of practical significance in pharmaceutical and fine chemical industries. It is a high temperature reaction with an exothermic nature in numerous cases. The conventional batch-wise synthesis is limited by its operational compl

REARRANGEMENT OF NITRONES TO AMIDES USING CHLOROSULFONYL ISOCYANATE

Joseph, Sajan P.,Dhar, D. N.

, p. 5979 - 5983 (2007/10/02)

Reaction of chlorosulfonyl isocyanate (CSI) with nitrones 1a-n and 5a,b has been studied. α,α,N-Triaryl nitrones 1a-n react with CSI to form the N,N-diaryl arylamides 3a-n and 4i-n in good yields.In the case of α-H,α,N-diaryl nitrones 5a,b however, two compounds viz., the rearranged product 11a,b and the 1,4-dihydro tetrazines 10a,b are formed.The effect of substituents on the rearrangement has been studied.It is found that the nature of the substituents has got a profound effect on the rearrangement.We have also noted that the rearrangement is independent of the syn or anti configurations of the nitrones.

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