68314-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 68314-20-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,3,1 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 68314-20:
(7*6)+(6*8)+(5*3)+(4*1)+(3*4)+(2*2)+(1*0)=125
125 % 10 = 5
So 68314-20-5 is a valid CAS Registry Number.
68314-20-5Relevant articles and documents
SYNTHESIS OF 1-OXA ANALOGUES OF NATURALLY OCCURRING CEPHALOSPORINS AND CEPHAMYCINS
Sendo, Yuji,Konoike, Toshiro,Murakami, Masayuki,Yoshioka, Mitsuru
, p. 599 - 603 (2007/10/02)
The title compounds 15a-c and 16a-c were synthesized from a 3-exomethylene-1-oxacepham compound 4.Its chlorohydroxylation provided a key intermediate 5e in synthesis of the 3'-oxygen-functionalized 1-oxacephems.