TABLE 1.

Stability screening of DNA barcodes 5 and 6 in presence of protic acids, metal salts and organic reagents.^a

Entry	Reagent	Solvent	3 [11]	4 [7]	5	6
1	3.7% HCl	H2O
2	Ce(NH4)2(NO3)6	MeOH
3	Co(acac)3	ACN
4	Cu(MeCN)4PF6	ACN
5	FeCl2 ∙ 4 H2O	ACN
6b	La(Oi-Pr)3	THF
7	Ni(acac)2	ACN
8	Pd(OAc)2	ACN
9	RuCl3	ACN
10	Grubbs 1st Gen	CH2Cl2
11	Sc(OTf)3	ACN
12c	Sc(OTf)3	ACN
13	SeO2	MeOH
14	VO(acac)2	MeOH
15	ZnCl2	ACN
16	DDQ 7	EtOH
17	PIDA 8	ACN
18	TEMPO 9	ACN
				Degree of DNA degradation
0–20%	21–40%	41–60%	>61%

^a For each: 20 nmol DNA, aqueous acids or 200 equiv. transition metal salt or 200 equiv. organic reagent, 50 µL solvent, rt, 22 h ^b Poor solubility, added as suspension. ^c Experiment was performed at 40 °C. AMA, aq. NH₃/MeNH₂, ACN, acetonitrile, MeOH, methanol.