57637-90-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57637-90-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,6,3 and 7 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 57637-90:
(7*5)+(6*7)+(5*6)+(4*3)+(3*7)+(2*9)+(1*0)=158
158 % 10 = 8
So 57637-90-8 is a valid CAS Registry Number.
InChI:InChI=1/C23H29ClO4.C20H26O2/c1-13(25)23(28-14(2)26)10-7-18-16-12-20(24)19-11-15(27)5-8-21(19,3)17(16)6-9-22(18,23)4;1-3-20(22)11-9-18-17-6-4-13-12-14(21)5-7-15(13)16(17)8-10-19(18,20)2/h11-12,16-18H,5-10H2,1-4H3;1,12,15-18,22H,4-11H2,2H3/t16-,17+,18+,21-,22+,23?;15-,16+,17+,18-,19-,20-/m10/s1