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158689-13-5

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158689-13-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 158689-13-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,6,8 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 158689-13:
(8*1)+(7*5)+(6*8)+(5*6)+(4*8)+(3*9)+(2*1)+(1*3)=185
185 % 10 = 5
So 158689-13-5 is a valid CAS Registry Number.

158689-13-5Relevant articles and documents

Benzoylation of arenes using envirocat EPZG catalyst and microwave irradiation

Veverkova, Eva,Goyov, Battsengel,Mitterpach, Robert,Toma, Stefan

, p. 644 - 650 (2000)

Benzoylations of several benzene, naphthalene and thiophene derivatives with benzoyl chloride or benzoie anhydride, catalyzed with EPZG catalyst and in the absence of solvents were studied under microwave irradiation (MWI). Reasonable to good yields of products were achieved in short times.

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