921-28-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 921-28-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,2 and 1 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 921-28:
(5*9)+(4*2)+(3*1)+(2*2)+(1*8)=68
68 % 10 = 8
So 921-28-8 is a valid CAS Registry Number.
InChI:InChI=1/C7H12O5/c1-3(2)4(6(9)10)5(8)7(11)12/h3-5,8H,1-2H3,(H,9,10)(H,11,12)/t4-,5-/m0/s1
921-28-8Relevant academic research and scientific papers
DL-threo-3-Isopropylmalic Acid and DL-threo--3-Isopropylmalic Acid
Yamada, Tohru,Kakinuma, Katsumi,Oshima, Tairo
, p. 1745 - 1748 (2007/10/02)
A practical preparative method of the titled compounds was exploited, during which unusually erythro-favored aldol condensation of an lower alkyl ester was observed.
