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91502-31-7

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91502-31-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91502-31-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,5,0 and 2 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 91502-31:
(7*9)+(6*1)+(5*5)+(4*0)+(3*2)+(2*3)+(1*1)=107
107 % 10 = 7
So 91502-31-7 is a valid CAS Registry Number.

91502-31-7Downstream Products

91502-31-7Relevant articles and documents

PHOTOISOMERISATION OF BIS(TRIFLUOROMETHYL)THIOPHENES

Kobayashi, Yoshiro,Kawada, Kosuke,Ando, Akira,Kumadaki, Itsumaro

, p. 1917 - 1920 (2007/10/02)

The photolysis of 2,3-bis(trifluoromethyl)thiophene gave an equilibrium mixture of 2,3- and 3,4-bis(trifluoromethyl)Dewar thiophenes, while that of 2,5-bis(trifluoromethyl)thiophene gave 2,4-bis(trifluoromethyl)thiophene, which seemed to be formed through an intermediate other than the Dewar form.

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