3036-23-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3036-23-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,0,3 and 6 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 3036-23:
(6*3)+(5*0)+(4*3)+(3*6)+(2*2)+(1*3)=55
55 % 10 = 5
So 3036-23-5 is a valid CAS Registry Number.
3036-23-5Relevant articles and documents
Synthesis of new sulfonyl chlorides on the basis of substituted diphenyl sulfones
Yablonskii,Tarasov,Moskvichev
, p. 60 - 63 (2007/10/03)
-Sulfonation of substituted diphenyl sulfones with excess chlorosulfonic acid at 100°C yields as a rule the corresponding bis-sulfonyl chlorides. The reaction with an equimolar amount of 20% oleum yields products of sulfonation of only one benzene ring.
