91913-35-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91913-35-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,9,1 and 3 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 91913-35:
(7*9)+(6*1)+(5*9)+(4*1)+(3*3)+(2*3)+(1*5)=138
138 % 10 = 8
So 91913-35-8 is a valid CAS Registry Number.
91913-35-8Relevant articles and documents
Note on the Synthesis of 1,2-Benzoxathiine 2,2-Dioxide Derivatives from 3-Chromonesulfonic Acid
Loewe, Werner,Mueller-Menke, Claudia
, p. 1395 - 1398 (2007/10/02)
Starting with 3-chromonesulfonic acid (1) the 1,2-benzoxathiine 2,2-dioxide derivatives 7 and 8 have been obtained by ring transformation of the sulfonyl chloride 4.
