203311-23-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 203311-23-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,3,1 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 203311-23:
(8*2)+(7*0)+(6*3)+(5*3)+(4*1)+(3*1)+(2*2)+(1*3)=63
63 % 10 = 3
So 203311-23-3 is a valid CAS Registry Number.
203311-23-3Relevant academic research and scientific papers
Process for the preparation of benzopyran compounds
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, (2008/06/13)
PCT No. PCT/EP97/04328 Sec. 371 Date Feb. 8, 1999 Sec. 102(e) Date Feb. 8, 1999 PCT Filed Aug. 5, 1997 PCT Pub. No. WO98/06718 PCT Pub. Date Feb. 19, 1998A process for preparing certain substituted benzopyran compounds is disclosed.
