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137601-37-7

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137601-37-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137601-37-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,6,0 and 1 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 137601-37:
(8*1)+(7*3)+(6*7)+(5*6)+(4*0)+(3*1)+(2*3)+(1*7)=117
117 % 10 = 7
So 137601-37-7 is a valid CAS Registry Number.

137601-37-7Downstream Products

137601-37-7Relevant articles and documents

Improved preparation of angelate esters

Hartmann, Benoit,Kanazawa, Alice M.,Depres, Jean-Pierre,Greene, Andrew E.

, p. 5077 - 5080 (1991)

A new procedure has been developed for the efficient preparation of angelate esters from alcohols. The alcohol is treated in dry toluene at 70-80°C for 19-36 h with a mixed anhydride prepared from angelic acid and 2,4,6-trichlorobenzoyl chloride. In the absence of base, no tiglate ester is produced.

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