135587-52-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 135587-52-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,5,8 and 7 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 135587-52:
(8*1)+(7*3)+(6*5)+(5*5)+(4*8)+(3*7)+(2*5)+(1*2)=149
149 % 10 = 9
So 135587-52-9 is a valid CAS Registry Number.
135587-52-9Relevant articles and documents
Synthesis of New Tricyclic Cephalosporins from Cephalosporin 3'-Triphenylphosphorane
Sakagami, Kenji,Tashiro, Mitsuru,Takeuchi, Yasuo,Hatanaka, Minoru
, p. 1766 - 1767 (2007/10/02)
Cephalosporin 3'-triphenylphosphorane reacted with α-halogeno ketones to give new tricyclic cephalosporins; their aminothiazole oximino derivatives showed a significant activity against gram-negative bacteria.