91570-58-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91570-58-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,5,7 and 0 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 91570-58:
(7*9)+(6*1)+(5*5)+(4*7)+(3*0)+(2*5)+(1*8)=140
140 % 10 = 0
So 91570-58-0 is a valid CAS Registry Number.
91570-58-0Relevant articles and documents
Non-lithiation route to naturally occuring 5,7-dimethoxyphthalide
Kumaran, G.,Kulkarni, G. H.
, p. 436 - 437 (2007/10/02)
A non-lithiation route has been described for the synthesis of naturally occurring 5,7-dimethoxyphthalide (10) starting from ethyl orsellinate (1) involving simple reactions and less expensive reagents.
