74242-86-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74242-86-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,2,4 and 2 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 74242-86:
(7*7)+(6*4)+(5*2)+(4*4)+(3*2)+(2*8)+(1*6)=127
127 % 10 = 7
So 74242-86-7 is a valid CAS Registry Number.
74242-86-7Relevant articles and documents
STEREOCONTROLLED, STRAIGHTFORWARD SYNTHESIS OF 3-SUBSTITUTED METHYL 7α-METHOXY-1-OXACEPHEMS
Yoshioka, Mitsuru,Tsui, Teruji,Uyeo, Shoichiro,Yamamoto, Sadao,Aoki, Tsutomu,at al.
, p. 351 - 354 (2007/10/02)
Stereocontrolled and industrially feasible synthesis of a new antibiotic 1a and related derivates, which is characterized by using all the carbon atoms of the penicillin skeleton, is described.