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137268-70-3

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137268-70-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137268-70-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,2,6 and 8 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 137268-70:
(8*1)+(7*3)+(6*7)+(5*2)+(4*6)+(3*8)+(2*7)+(1*0)=143
143 % 10 = 3
So 137268-70-3 is a valid CAS Registry Number.
InChI:InChI=1/4C23H28O6.2Cu/c3*1-12(24)28-20-9-8-19-16-5-6-17-14(15(16)10-11-23(19,20)3)4-7-18(22(26)27)21(17)29-13(2)25;1-12(24)28-20-11-14(22(26)27)10-18-15-8-9-23(3)19(16(15)4-5-17(18)20)6-7-21(23)29-13(2)25;;/h3*4,7,15-16,19-20H,5-6,8-11H2,1-3H3,(H,26,27);10-11,15-16,19,21H,4-9H2,1-3H3,(H,26,27);;/q;;;;2*+2/p-4

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